/* ========================================
   CSS Variables
   ======================================== */
:root {
    --color-primary: #0EA5E9;
    --color-primary-dark: #0284C7;
    --color-bg-dark: #0A1628;
    --color-bg-darker: #060D19;
    --color-bg-light: #F8FAFC;
    --color-text-dark: #0F172A;
    --color-text-light: #FFFFFF;
    --color-text-muted: #94A3B8;
    --color-card-bg: #1E293B;

    --font-primary: 'Ruda', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;

    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;

    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-text-light);
    background-color: var(--color-bg-dark);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ========================================
   Animated Background
   ======================================== */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, var(--color-bg-darker) 0%, var(--color-bg-dark) 50%, #0D1B2A 100%);
}

#particlesCanvas {
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

/* ========================================
   Container
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - var(--spacing-xl));
    max-width: 1200px;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    top: var(--spacing-sm);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    min-height: 70px;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: 1001;
}

.nav__logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
    display: block;
}

.nav__brand {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    line-height: 1.2;
}

.nav__menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav__link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: var(--transition);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav__link:hover {
    color: var(--color-primary);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}

.nav__toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text-light);
    transition: var(--transition);
}

.nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-text-light);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.btn--waitlist {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    background: var(--color-text-light);
    color: var(--color-primary);
    border-radius: 50px;
    transition: var(--transition);
    white-space: nowrap;
    border: 2px solid var(--color-text-light);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn--waitlist:hover {
    background: #f0f9ff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.2);
}

.btn--hero {
    gap: 0.75rem;
    padding: 0.75rem 1rem 0.75rem 2rem;
    font-size: 1rem;
    border-radius: 50px;
    background: var(--color-text-light);
    color: var(--color-primary);
    border: 2px solid var(--color-text-light);
}

.btn--hero-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    border-radius: 50%;
    transition: var(--transition);
}

.btn--hero:hover {
    background: #f0f9ff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.2);
}

.btn--hero:hover .btn--hero-icon {
    background: var(--color-primary-dark);
    transform: translateX(3px);
}

.btn--support-letter {
    gap: 0.55rem;
    padding: 0.45rem 0.5rem 0.45rem 1rem;
    min-height: 36px;
    font-size: 0.82rem;
    line-height: 1;
    background: var(--color-primary);
    color: var(--color-text-light);
    border: 1px solid var(--color-primary);
    border-radius: 50px;
    box-shadow: 0 6px 16px rgba(0, 85, 255, 0.22);
}

.btn--support-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    color: var(--color-primary);
    background: var(--color-text-light);
    border-radius: 50%;
    transition: var(--transition);
}

.btn--support-letter:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
}

.btn--support-letter:hover .btn--support-icon {
    transform: translateX(2px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(80px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
    position: relative;
}

.hero__content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
    animation: fadeInUp 1s ease;
}

.hero__actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.7rem;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero__disclaimer {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    animation: fadeInUp 1s ease 0.3s backwards;
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--spacing-2xl) var(--spacing-md);
    position: relative;
}

.section--light {
    background: var(--color-bg-light);
    color: var(--color-text-dark);
}

.section--dark {
    background: transparent;
    color: var(--color-text-light);
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section__subtitle {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section__subtitle--dark {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: normal;
    text-transform: none;
    color: var(--color-text-dark);
    margin-top: var(--spacing-sm);
}

.section--light .section__subtitle {
    color: var(--color-primary);
}

.section__title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

.section__content {
    max-width: 800px;
    margin: 0 auto;
}

.section__text {
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: center;
}

/* ========================================
   Cards
   ======================================== */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.card {
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(14, 165, 233, 0.3);
}

.card--light {
    background: var(--color-text-light);
    border: 1px solid #E2E8F0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.card--light:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: rgba(14, 165, 233, 0.2);
}

.card__number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.card__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.card__title--dark {
    color: var(--color-text-dark);
}

.card__text {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

.card__text--dark {
    color: #64748B;
}

/* ========================================
   Statistics Section
   ======================================== */
.section--stats {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
}

.stats__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.stats__number {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.stats__description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.stats__items {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.stats__item {
    display: flex;
    flex-direction: column;
}

.stats__value {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.stats__label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.stats__image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* ========================================
   Mentor Section
   ======================================== */
.section--mentor {
    background: var(--color-bg-light);
}

.mentor__grid {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--spacing-xl);
    align-items: stretch;
}

.mentor__image {
    display: flex;
    align-items: stretch;
}

.mentor__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.mentor__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.mentor__name {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.mentor__bio {
    font-size: 1rem;
    line-height: 1.8;
    color: #475569;
    margin-bottom: var(--spacing-md);
}

.mentor__disclaimer {
    font-size: 0.85rem;
    font-style: italic;
    color: var(--color-text-muted);
    margin-top: var(--spacing-lg);
}

/* ========================================
   Teaching Approach Section
   ======================================== */
.approach__check {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ========================================
   Modules Accordion Section
   ======================================== */
.section--modules {
    padding-top: 0;
}

.modules__accordion {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-text-light);
    border-radius: var(--border-radius-lg);
    border: 1px solid #E2E8F0;
    padding: var(--spacing-lg);
}

.course-outline {
    max-width: 730px;
    border: 1px solid #38A9FF;
    border-radius: 12px;
    box-shadow: 0 12px 18px rgba(15, 23, 42, 0.18);
    overflow: hidden;
    padding: 0;
}

.course__section {
    border-bottom: 1px solid #E2E8F0;
}

.course__section:last-child {
    border-bottom: 0;
}

.course__section-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: 1rem 1.35rem;
    background: transparent;
    border: 0;
    color: var(--color-text-dark);
    cursor: pointer;
    text-align: left;
}

.course__section-title {
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1.25;
}

.course__section-icon {
    color: var(--color-primary);
    font-size: 1.15rem;
    line-height: 1;
    transition: var(--transition);
}

.course__section.active .course__section-icon {
    transform: rotate(45deg);
}

.course__section-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.35rem;
}

.course__section.active .course__section-content {
    max-height: 6000px;
    padding-bottom: 1rem;
}

.course__description {
    color: #1E293B;
    font-size: 0.9rem;
    line-height: 1.65;
    margin-bottom: 1rem;
}

.modules__title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-md);
}

.modules__topics {
    margin: 0;
    padding-left: 1.2rem;
    color: #1E293B;
}

.modules__topics li {
    font-size: 0.86rem;
    line-height: 1.55;
    margin-bottom: 0.55rem;
    padding-left: 0.15rem;
}

.modules__topics li::marker {
    color: var(--color-primary);
}

.module__item {
    border-bottom: 1px solid #E2E8F0;
}

.module__item:last-child {
    border-bottom: none;
}

.module__header {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.75rem 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.module__header:hover {
    color: var(--color-primary);
}

.module__icon {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-primary);
    transition: var(--transition);
}

.module__item.active .module__icon {
    transform: rotate(45deg);
}

.module__name {
    font-size: 0.86rem;
    font-weight: 800;
    color: var(--color-text-dark);
    flex: 1;
}

.module__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 0 0 2rem;
}

.module__item.active .module__content {
    max-height: 900px;
    padding-bottom: var(--spacing-md);
}

.module__content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #64748B;
}

.module__content ul {
    margin: var(--spacing-sm) 0 0 1.2rem;
    padding: 0;
    color: #64748B;
}

.module__content li {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.45rem;
}

/* ========================================
   Teaching Methods Section
   ======================================== */
.section--methods {
    background: var(--color-bg-light);
}

.methods__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-lg);
    max-width: 1160px;
    margin: 0 auto;
}

.method__card {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-bg-darker) 0%, var(--color-bg-dark) 50%, #0D1B2A 100%);
    background-size: 170% 170%;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(125, 211, 252, 0.28);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.14);
    transition: var(--transition);
    animation: methodHeroBg 12s ease infinite;
}

.method__card::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 18px 22px, rgba(14, 165, 233, 0.85) 0 2px, transparent 3px),
        radial-gradient(circle at 64px 52px, rgba(125, 211, 252, 0.55) 0 1px, transparent 2px);
    background-size: 96px 86px;
    opacity: 0.45;
    animation: methodParticles 18s linear infinite;
}

.method__card::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(25deg, transparent 0 23%, rgba(125, 211, 252, 0.24) 23.3%, transparent 23.8%),
        linear-gradient(145deg, transparent 0 34%, rgba(14, 165, 233, 0.24) 34.3%, transparent 34.8%),
        linear-gradient(62deg, transparent 0 68%, rgba(125, 211, 252, 0.18) 68.3%, transparent 68.8%);
    opacity: 0;
    transform: translate3d(-2%, -2%, 0) scale(1.04);
    transition: opacity 0.25s ease, transform 0.35s ease;
}

.method__card > * {
    position: relative;
    z-index: 2;
}

.method__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 22px 48px rgba(14, 165, 233, 0.22);
    border-color: rgba(125, 211, 252, 0.55);
}

.method__card:hover::after {
    opacity: 0.85;
    transform: translate3d(0, 0, 0) scale(1.08);
}

.method__number {
    display: block;
    font-size: 2.35rem;
    font-weight: 800;
    color: var(--color-text-light);
    line-height: 1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0;
}

.method__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.method__description {
    font-size: 0.95rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.82);
}

@keyframes methodHeroBg {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes methodParticles {
    from { background-position: 0 0, 0 0; }
    to { background-position: 96px 86px, -96px 86px; }
}


/* ========================================
   Carousel Base Styles
   ======================================== */
.carousel__wrapper {
    position: relative;
    margin-top: var(--spacing-xl);
}

.carousel__container {
    display: flex;
    gap: var(--spacing-lg);
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: var(--spacing-md) 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.carousel__container::-webkit-scrollbar {
    display: none;
}

.carousel__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: var(--color-text-light);
    border: 1px solid #E2E8F0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
    color: var(--color-text-dark);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.carousel__nav:hover {
    background: var(--color-primary);
    color: var(--color-text-light);
    transform: translateY(-50%) scale(1.1);
}

.carousel__nav--prev {
    left: -24px;
}

.carousel__nav--next {
    right: -24px;
}

/* ========================================
   Results Carousel
   ======================================== */
.carousel__item {
    flex: 0 0 350px;
    background: var(--color-text-light);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.carousel__item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.carousel__item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.carousel__name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-dark);
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-xs);
}

.carousel__achievement {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #64748B;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

/* ========================================
   Profile Cards Carousel
   ======================================== */
.carousel__container--profiles {
    gap: var(--spacing-md);
}

.profile__card {
    flex: 0 0 280px;
    background: var(--color-text-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    text-align: center;
}

.profile__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.profile__image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--color-primary);
}

.profile__name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-xs);
}

.profile__specialty {
    font-size: 0.9rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.profile__institution {
    font-size: 0.85rem;
    line-height: 1.4;
    color: #64748B;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    background: var(--color-bg-darker);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer__logo {
    display: block;
    width: auto;
    height: 46px;
    object-fit: contain;
    margin: 0 auto var(--spacing-sm);
}

.footer__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease;
}

.animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Video Testimonials Section
   ======================================== */
.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.testimonial__card {
    background: var(--color-text-light);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    cursor: pointer;
}

.testimonial__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.video__thumbnail {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.video__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.video__play:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.testimonial__info {
    padding: var(--spacing-md);
}

.testimonial__name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-xs);
}

.testimonial__quote {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #64748B;
    margin-bottom: var(--spacing-sm);
}

.testimonial__rating {
    color: var(--color-primary);
    font-size: 1.2rem;
}

.testimonial__rating span {
    margin-right: 2px;
}

/* ========================================
   Waitlist Form Section
   ======================================== */
.section--waitlist {
    background: var(--color-bg-dark);
}

.waitlist__content {
    max-width: 600px;
    margin: 0 auto;
}

.waitlist__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.form-group {
    position: relative;
    width: 100%;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.form__input,
.form__select {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    font-family: var(--font-primary);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-light);
    transition: var(--transition);
}

.form__input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form__input:focus,
.form__select:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.08);
}

.form__input.error,
.form__select.error {
    border-color: #EF4444;
    background: rgba(239, 68, 68, 0.1);
}

.error-message {
    display: block;
    color: #FCA5A5;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form__select option {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
}

/* Intl Tel Input Custom Styles */
.iti {
    width: 100%;
}

.iti__selected-flag {
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-right: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    padding: 0 12px;
}

.iti__flag-container {
    padding: 0;
}

#phone {
    padding-left: 90px;
}

.iti__country-list {
    background: var(--color-bg-dark);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.iti__country {
    color: var(--color-text-light);
    padding: 8px 12px;
}

.iti__country:hover {
    background: rgba(14, 165, 233, 0.15);
}

.iti__country.iti__highlight {
    background: rgba(14, 165, 233, 0.25);
}

.btn--submit {
    width: 100%;
    padding: 1.25rem var(--spacing-lg);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-light);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    min-height: 70px;
}

.btn--submit .btn-text {
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn--submit .btn-subtext {
    font-size: 0.8rem;
    font-weight: 400;
    text-transform: none;
    opacity: 0.85;
    letter-spacing: 0.02em;
}

.btn--submit:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #0369A1 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

.btn--submit:disabled,
.btn--submit.loading {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn--submit.loading .btn-text::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

/* Framer-style form submit button — loading state */
.waitlist__form--framer #submitBtn.loading {
    opacity: 0.75;
    cursor: wait;
}
.waitlist__form--framer #submitBtn.loading .btn-text::after {
    content: '...';
    display: inline-block;
    animation: dots 1.5s steps(4, end) infinite;
}

/* Testimonials — "See more" CTA */
.testimonials__cta {
    display: flex;
    justify-content: center;
    margin-top: 2.5rem;
}
.testimonials__see-more {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .875rem 1.75rem;
    border-radius: 9999px;
    border: 1.5px solid rgba(14, 165, 233, 0.5);
    color: var(--color-primary, #0ea5e9);
    font-weight: 600;
    font-size: .95rem;
    letter-spacing: .02em;
    text-decoration: none;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}
.testimonials__see-more:hover {
    background: var(--color-primary, #0ea5e9);
    color: #fff;
    transform: translateY(-2px);
}

/* Framer form — intl-tel-input overrides to match white theme */
.waitlist__form--framer .iti { width: 100%; display: block; }
.waitlist__form--framer .iti__selected-flag {
    background: rgb(240, 240, 240);
    border: none;
    border-radius: 6px 0 0 6px;
    padding: 0 10px;
}
.waitlist__form--framer .iti__selected-flag:hover { background: rgb(230, 230, 230); }
.waitlist__form--framer .iti--separate-dial-code .iti__selected-dial-code { color: #111; }
.waitlist__form--framer #phone { padding-left: 90px !important; }
.waitlist__form--framer .form-group input.error,
.waitlist__form--framer .form-group select.error {
    outline: 2px solid #e53935;
    outline-offset: 0;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

/* ========================================
   FAQ Section
   ======================================== */
.section--faq {
    background: var(--color-bg-dark);
}

.faq__title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.faq__accordion {
    max-width: 900px;
    margin: 0 auto;
}

.faq__item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.faq__item:last-child {
    border-bottom: none;
}

.faq__header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: 0.9rem 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq__header:hover {
    color: var(--color-primary);
}

.faq__question {
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--color-text-light);
    flex: 1;
}

.faq__icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: var(--color-primary);
    transition: var(--transition);
}

.faq__item.active .faq__icon {
    transform: rotate(45deg);
}

.faq__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq__item.active .faq__content {
    max-height: 1200px;
    padding-bottom: 0.9rem;
}

.faq__content p {
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--color-text-muted);
    margin-bottom: 0.65rem;
}

.faq__content p:last-child {
    margin-bottom: 0;
}

.faq__content a {
    color: #7dd3ff;
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

.faq__content a:hover {
    color: #a7e3ff;
}

/* ========================================
   Video Modal
   ======================================== */
.video__modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
}

.video__modal.active {
    display: block;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
}

.modal__content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 900px;
    background: var(--color-bg-dark);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
}

.modal__close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal__close:hover {
    color: var(--color-primary);
}

.modal__content video {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet */
@media (max-width: 968px) {
    .header {
        width: calc(100% - var(--spacing-md));
        top: var(--spacing-sm);
    }

    .nav {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        transition: var(--transition);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
        border-radius: 0;
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__item {
        width: 100%;
    }

    .nav__link {
        font-size: 1.1rem;
        padding: var(--spacing-sm) 0;
        display: block;
    }

    .btn--waitlist {
        display: none;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .stats__grid,
    .mentor__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .carousel__nav {
        width: 40px;
        height: 40px;
    }

    .carousel__nav--prev {
        left: -20px;
    }

    .carousel__nav--next {
        right: -20px;
    }

    .methods__grid {
        grid-template-columns: 1fr;
    }

    .testimonials__grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* Mobile */
@media (max-width: 640px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-2xl: 4rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .header {
        width: calc(100% - var(--spacing-md));
    }

    .nav {
        padding: 0.5rem var(--spacing-sm);
        min-height: 60px;
    }

    .nav__logo-img {
        height: 35px;
    }

    .nav__brand {
        font-size: 0.65rem;
    }

    .hero {
        padding: calc(100px + var(--spacing-lg)) var(--spacing-sm) var(--spacing-lg);
    }

    .hero__title {
        font-size: 1.5rem;
    }

    .btn--hero {
        padding: 0.8rem 0.9rem 0.8rem 1.35rem;
        font-size: 0.9rem;
    }

    .hero__actions {
        width: 100%;
        gap: 0.6rem;
    }

    .btn--support-letter {
        max-width: calc(100vw - 2rem);
        padding: 0.44rem 0.45rem 0.44rem 0.9rem;
        font-size: 0.78rem;
        white-space: nowrap;
    }

    .btn--support-icon {
        width: 24px;
        height: 24px;
    }

    .section {
        padding: 2rem var(--spacing-sm);
    }

    .section__title {
        font-size: 1.75rem;
    }

    .section__text {
        font-size: 1rem;
    }

    .cards {
        gap: var(--spacing-md);
    }

    .card {
        padding: var(--spacing-md);
    }

    .card__number {
        font-size: 1.5rem;
    }

    .card__title {
        font-size: 1.25rem;
    }

    .card__text {
        font-size: 0.9rem;
    }

    .stats__number {
        font-size: 2.5rem;
    }

    .stats__items {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .mentor__grid {
        grid-template-columns: 1fr;
    }

    .mentor__image img {
        height: auto;
        object-fit: contain;
    }

    .carousel__item {
        flex: 0 0 280px;
    }

    .profile__card {
        flex: 0 0 240px;
    }

    .testimonials__grid {
        grid-template-columns: 1fr;
    }

    .modal__content {
        width: 95%;
    }

    .faq__question {
        font-size: 1rem;
    }

    .waitlist__form {
        gap: var(--spacing-sm);
    }

    .iti {
        width: 100% !important;
    }

    .iti__selected-flag {
        padding: 0 8px;
    }

    .btn--submit .btn-text {
        font-size: 0.9rem;
    }

    .btn--submit .btn-subtext {
        font-size: 0.7rem;
    }

    /* Tighten mobile vertical rhythm */
    .section__header { margin-bottom: 1.25rem; }
    .cards { margin-top: 1.25rem; gap: 1rem; }
    .approach__check { margin-top: 1.25rem; }
    .stats__items { margin-top: 1.25rem; gap: 1rem; }
    .stats__description { margin-bottom: 1rem; }
    .stats__content { margin-bottom: 1.25rem; }
    .marquee__wrapper { margin-top: 1.25rem; }
    .section--stories > .container { padding-top: 1.25rem; }
    .testimonials__cta { margin-top: 1rem; }
    .testimonials__grid--stack { gap: 1rem; }
    .mentor__bio { margin-bottom: 0.75rem !important; }
    .mentor__name { margin-bottom: 0.75rem !important; }
    .mentor__label { margin-bottom: 0.5rem !important; }
    .mentor__disclaimer { margin-top: 1rem !important; }
    .modules__accordion { padding: 1.25rem; }
    .course-outline { padding: 0; }
    .modules__title { margin-bottom: 1rem; }
    .module__header { padding: 1rem 0; }
    .faq__title { margin-bottom: 1.25rem; }
    .section__text + .section__text,
    .mentor__bio + .mentor__bio { margin-top: 0.5rem; }
}

@media (max-width: 380px) {
    .header {
        width: calc(100% - var(--spacing-sm));
    }

    .hero__title {
        font-size: 1.25rem;
    }

    .nav__menu {
        width: 100%;
        right: -100%;
    }
}

/* ========================================
   Infinite Marquee
   ======================================== */
.section--results,
.section--stories {
    overflow: hidden;
}
.section--results { padding-bottom: 0; }
.section--stories { padding-top: 0; }
.section--stories > .container { padding-top: var(--spacing-xl); }

.marquee__wrapper {
    position: relative;
    left: 50%;
    transform: translateX(-50%);
    width: 100vw;
    overflow: hidden;
    margin-top: var(--spacing-xl);
}
.marquee__track {
    display: flex;
    gap: 1.5rem;
    width: max-content;
    padding: var(--spacing-sm) 0;
    will-change: transform;
}
.marquee__track--left  { animation: marquee-left  50s linear infinite; }
.marquee__track--right { animation: marquee-right 40s linear infinite; }
/* hover slowdown handled via JS (playbackRate) to avoid position jump */

.marquee__track .carousel__item,
.marquee__track .carousel__item--card,
.marquee__track .profile__card,
.marquee__track .profile__card--img-only {
    background: transparent;
    box-shadow: none;
    border-radius: 0;
}

.marquee__track .carousel__item:hover,
.marquee__track .carousel__item--card:hover,
.marquee__track .profile__card:hover,
.marquee__track .profile__card--img-only:hover {
    transform: none;
    box-shadow: none;
}

@keyframes marquee-left  { 0% { transform: translateX(0); }    100% { transform: translateX(-50%); } }
@keyframes marquee-right { 0% { transform: translateX(-50%); } 100% { transform: translateX(0); } }

.marquee__track .carousel__item--card { flex: 0 0 400px; cursor: default; overflow: hidden; }
.marquee__track .carousel__item--card img { width: 100%; height: auto; display: block; object-fit: contain; border-radius: 12px; }
.marquee__track .profile__card--img-only { flex: 0 0 320px; cursor: default; }

.profile__card--img-only { padding: 0; overflow: hidden; }
.profile__card--img-only img { width: 100%; height: auto; border-radius: 12px; border: none; margin: 0; display: block; object-fit: contain; }

@media (max-width: 640px) {
    .marquee__track .carousel__item--card { flex: 0 0 260px; }
    .marquee__track .profile__card--img-only { flex: 0 0 220px; }
    .marquee__track--left  { animation-duration: 60s; }
    .marquee__track--right { animation-duration: 80s; }
}

/* ========================================
   YouTube Testimonials
   ======================================== */
.testimonials__grid--stack {
    grid-template-columns: repeat(2, 1fr);
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
    gap: var(--spacing-lg);
}
.testimonial__card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
}
.testimonial__card--video-only {
    display: block;
    cursor: default;
    background: transparent;
    box-shadow: none;
    border-radius: 12px;
    overflow: hidden;
}
.testimonial__card--video-only:hover {
    transform: none;
    box-shadow: none;
}
.testimonial__card--centered {
    grid-column: 1 / -1;
    max-width: calc(50% - (var(--spacing-lg) / 2));
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}
.video__thumbnail--yt {
    flex: 0 0 55%;
    position: relative;
    min-height: 240px;
}
.testimonial__card--video-only .video__thumbnail--yt {
    flex: none;
    width: 100%;
    min-height: 0;
    height: 0;
    padding-bottom: 56.25%;
}
.video__thumbnail--yt iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: none;
}
@media (max-width: 768px) {
    .testimonials__grid--stack { grid-template-columns: 1fr; }
    .testimonial__card { flex-direction: column; }
    .video__thumbnail--yt { flex: none; width: 100%; min-height: 0; padding-bottom: 56.25%; height: 0; }
    .testimonial__card--centered {
        max-width: 100%;
        margin-left: 0;
        margin-right: 0;
    }
}