/* ═══════════════════════════════════════════════════════════════
   SARA ALARCÓN — PREMIUM LANDING PAGE
   Design System + Full Styles
   ═══════════════════════════════════════════════════════════════ */

/* ──── DESIGN TOKENS ──── */
:root {
    --color-base: #111111;
    --color-surface: #1A1A1A;
    --color-secondary: #2A2A2A;
    --color-primary: #8B1A2B;
    --color-primary-hover: #A42035;
    --color-accent: #D4A853;
    --color-accent-dim: rgba(212, 168, 83, 0.15);
    --color-text: #F5F0EB;
    --color-text-muted: #8A8580;
    --color-text-dim: #5A5550;
    --color-border: rgba(212, 168, 83, 0.12);
    --color-card: rgba(26, 26, 26, 0.85);
    --color-glass: rgba(17, 17, 17, 0.75);
    --color-overlay: rgba(17, 17, 17, 0.65);

    --font-display: 'Bebas Neue', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-accent: 'Playfair Display', serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(139, 26, 43, 0.15);
    --shadow-accent: 0 0 30px rgba(212, 168, 83, 0.1);

    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ──── RESET & BASE ──── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-base);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ──── SHARED ELEMENTS ──── */
.section-label {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.section-label--center {
    text-align: center;
}

.section-label__line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    margin-bottom: 24px;
}

.section-label__line--center {
    margin-left: auto;
    margin-right: auto;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    letter-spacing: 2px;
    line-height: 1.05;
    color: var(--color-text);
    margin-bottom: 24px;
}

.section-title--center {
    text-align: center;
}

/* BUTTON */
.btn {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn--primary {
    padding: 18px 48px;
    background: var(--color-primary);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 25px rgba(139, 26, 43, 0.35);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 35px rgba(139, 26, 43, 0.5);
}

.btn--cta {
    padding: 22px 56px;
    background: linear-gradient(135deg, var(--color-primary), #6E1522);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    box-shadow: 0 4px 30px rgba(139, 26, 43, 0.4);
}

.btn--cta:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 45px rgba(139, 26, 43, 0.55);
}

.btn--secondary {
    padding: 16px 36px;
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-sm);
    box-shadow: none;
}

.btn--secondary:hover {
    background: rgba(139, 26, 43, 0.15);
    transform: translateY(-2px);
}

/* ═══════════════════════════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════════════════════════ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-base);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(139, 26, 43, 0.15), transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(212, 168, 83, 0.06), transparent 50%);
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: linear-gradient(to top, var(--color-base), transparent);
    z-index: 2;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: url('images/sara_espalda.jpeg') center center / cover no-repeat;
    opacity: 0.15;
    filter: grayscale(30%) contrast(1.2);
    z-index: 0;
}

.hero__content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0 24px;
    max-width: 900px;
    animation: fadeInUp 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hero__label {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 5px;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeInUp 0.8s 0.3s forwards;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 10vw, 8rem);
    line-height: 0.92;
    letter-spacing: 4px;
    color: var(--color-text);
    margin-bottom: 28px;
    opacity: 0;
    animation: fadeInUp 0.8s 0.5s forwards;
}

.hero__title--accent {
    color: var(--color-primary);
    display: inline-block;
    position: relative;
}

.hero__title--accent::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), transparent);
}

.hero__subtitle {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0;
    animation: fadeInUp 0.8s 0.7s forwards;
}

.hero__cta {
    opacity: 0;
    animation: fadeInUp 0.8s 0.9s forwards;
}

.hero__micro {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-top: 24px;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeInUp 0.8s 1.1s forwards;
}

.hero__scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    opacity: 0;
    animation: fadeIn 1s 1.5s forwards;
}

.hero__scroll-indicator span {
    display: block;
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s infinite;
}

/* ═══════════════════════════════════════════════════════════════
   ABOUT SECTION
   ═══════════════════════════════════════════════════════════════ */
.about {
    padding: 120px 0;
    background: var(--color-base);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 80px;
    align-items: center;
}

.about__image-wrapper {
    position: relative;
}

.about__image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    position: relative;
    z-index: 1;
    transition: transform var(--transition-slow);
}

.about__image:hover {
    transform: scale(1.02) rotate(-0.5deg);
}

.about__image-accent {
    position: absolute;
    top: -16px;
    left: -16px;
    right: 16px;
    bottom: 16px;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    opacity: 0.2;
    z-index: 0;
}

.about__text-col {
    padding: 20px 0;
}

.about__paragraph {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about__paragraph strong {
    color: var(--color-text);
}

.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 36px;
}

.about__stat {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 18px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.about__stat:hover {
    border-color: rgba(212, 168, 83, 0.3);
    box-shadow: var(--shadow-accent);
    transform: translateY(-2px);
}

.about__stat-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.about__stat strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--color-text);
    margin-bottom: 4px;
}

.about__stat p {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    line-height: 1.4;
}

/* ═══════════════════════════════════════════════════════════════
   PLAN SECTION
   ═══════════════════════════════════════════════════════════════ */
.plan {
    padding: 120px 0 100px;
    background: linear-gradient(180deg, var(--color-base), var(--color-surface) 30%, var(--color-base));
    position: relative;
}

.plan__header {
    text-align: center;
    margin-bottom: 60px;
}

.plan__intro {
    font-family: var(--font-accent);
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 650px;
    margin: 0 auto;
}

/* Context Cards */
.plan__context {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.context-card {
    background: var(--color-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.context-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.context-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: rgba(212, 168, 83, 0.25);
}

.context-card:hover::before {
    opacity: 1;
}

.context-card__icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 16px;
}

.context-card__title {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-accent);
    margin-bottom: 6px;
}

.context-card__subtitle {
    font-family: var(--font-display);
    font-size: 1.6rem;
    letter-spacing: 1px;
    color: var(--color-text);
    margin-bottom: 12px;
}

.context-card p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.plan__tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.plan__actions {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
}

.plan__tab {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 3px;
    padding: 14px 32px;
    background: var(--color-secondary);
    color: var(--color-text-dim);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.plan__tab:hover {
    color: var(--color-text);
    border-color: var(--color-border);
}

.plan__tab--active {
    background: var(--color-primary);
    color: var(--color-text);
    box-shadow: 0 4px 20px rgba(139, 26, 43, 0.3);
}

/* Day Cards */
.day-card {
    display: none;
    background: var(--color-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    padding: 48px 40px;
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.5s ease;
}

.day-card--active {
    display: block;
}

.day-card__watermark {
    position: absolute;
    top: -30px;
    right: -10px;
    font-family: var(--font-display);
    font-size: 14rem;
    color: rgba(255, 255, 255, 0.02);
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

.day-card__header {
    margin-bottom: 36px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--color-border);
}

.day-card__label {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--color-accent);
    display: block;
    margin-bottom: 8px;
}

.day-card__title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    letter-spacing: 1px;
    color: var(--color-text);
    margin-bottom: 8px;
}

.day-card__focus {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    max-width: 600px;
}

/* Phases */
.day-card__phase {
    margin-bottom: 32px;
}

.phase-label {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Exercise List */
.exercise-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.exercise-list--simple {
    gap: 6px;
}

/* Simple (no-image) exercises */
.exercise-item--simple {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-secondary);
    transition: all var(--transition-fast);
}

.exercise-item--simple:hover {
    background: rgba(255, 255, 255, 0.04);
    border-left-color: var(--color-accent);
}

.exercise-item--simple .exercise-item__name {
    font-size: 0.9rem;
    color: var(--color-text);
}

.exercise-item__reps {
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 1px;
    white-space: nowrap;
}

/* Full exercise cards (with images) */
.exercise-item:not(.exercise-item--simple) {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 24px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.025);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.04);
    transition: all var(--transition-normal);
}

.exercise-item:not(.exercise-item--simple):hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border);
    transform: translateX(4px);
}

.exercise-item__images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    position: relative;
}

.exercise-item__images::after {
    content: '👆 VER DETALLE';
    position: absolute;
    bottom: 4px;
    right: 4px;
    font-size: 0.55rem;
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--color-accent);
    background: rgba(17, 17, 17, 0.85);
    padding: 3px 8px;
    border-radius: 4px;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
    pointer-events: none;
    z-index: 2;
}

.exercise-item__images:hover::after {
    opacity: 1;
}

.exercise-item__images img {
    width: 100%;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    filter: grayscale(30%);
    transition: all var(--transition-normal);
}

.exercise-item:hover .exercise-item__images img {
    filter: grayscale(0%);
}

.exercise-item__info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.exercise-item__number {
    font-family: var(--font-display);
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.05);
    position: absolute;
    top: -6px;
    right: 0;
    line-height: 1;
}

.exercise-item__info .exercise-item__name,
h5.exercise-item__name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.exercise-item__sets {
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.exercise-item__note {
    font-size: 0.88rem;
    color: var(--color-text);
    font-style: normal;
    font-weight: 500;
    background: rgba(212, 168, 83, 0.08);
    padding: 6px 10px;
    border-radius: 4px;
    border-left: 2px solid var(--color-accent);
    margin-top: 4px;
    line-height: 1.4;
}

/* Plan Note */
.plan__note {
    margin-top: 40px;
    padding: 24px 28px;
    background: rgba(139, 26, 43, 0.1);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-sm);
}

.plan__note p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.plan__note strong {
    color: var(--color-text);
}

/* ═══════════════════════════════════════════════════════════════
   PHILOSOPHY SECTION
   ═══════════════════════════════════════════════════════════════ */
.philosophy {
    padding: 120px 0;
    background: var(--color-base);
    position: relative;
}

.philosophy::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.philosophy__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.philosophy__block {
    padding: 40px 28px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.philosophy__block::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 3px;
    opacity: 0;
    transition: all var(--transition-normal);
}

.philosophy__block:hover {
    transform: translateY(-6px);
    border-color: rgba(212, 168, 83, 0.2);
    box-shadow: var(--shadow-card);
}

.philosophy__block:hover::after {
    opacity: 1;
    width: 80%;
}

.philosophy__icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.philosophy__title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 2px;
    color: var(--color-text);
    margin-bottom: 12px;
}

.philosophy__block p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ═══════════════════════════════════════════════════════════════
   CTA SECTION
   ═══════════════════════════════════════════════════════════════ */
.cta {
    position: relative;
    padding: 140px 0;
    text-align: center;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at center, rgba(139, 26, 43, 0.12), transparent 60%),
        radial-gradient(ellipse at 30% 80%, rgba(212, 168, 83, 0.06), transparent 50%);
}

.cta__overlay {
    position: absolute;
    inset: 0;
    background: url('images/sara_espalda.jpeg') center center / cover no-repeat;
    opacity: 0.06;
    filter: grayscale(50%);
}

.cta__content {
    position: relative;
    z-index: 1;
    max-width: 750px;
    margin: 0 auto;
    padding: 0 24px;
}

.cta__title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1;
    letter-spacing: 3px;
    color: var(--color-text);
    margin-bottom: 24px;
}

.cta__title--accent {
    color: var(--color-primary);
}

.cta__subtitle {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    line-height: 1.7;
}

.cta__micro {
    font-size: 0.7rem;
    color: var(--color-text-dim);
    margin-top: 24px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER / CERTIFICATE
   ═══════════════════════════════════════════════════════════════ */
.footer {
    padding: 80px 0 60px;
    background: var(--color-base);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.footer__certificate {
    text-align: center;
    padding: 50px 40px;
    max-width: 500px;
    margin: 0 auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    position: relative;
}

.footer__certificate::before,
.footer__certificate::after {
    content: '✦';
    position: absolute;
    color: var(--color-accent);
    opacity: 0.3;
    font-size: 1.2rem;
}

.footer__certificate::before {
    top: 20px;
    left: 24px;
}

.footer__certificate::after {
    bottom: 20px;
    right: 24px;
}

.footer__label {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 4px;
    color: var(--color-text-dim);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.footer__name {
    font-family: var(--font-display);
    font-size: 3rem;
    letter-spacing: 8px;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.footer__divider {
    width: 80px;
    height: 1px;
    background: var(--color-accent);
    margin: 0 auto 16px;
    opacity: 0.4;
}

.footer__trainer {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.footer__trainer strong {
    color: var(--color-text);
}

.footer__date {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    letter-spacing: 2px;
}

/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════════ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes scrollPulse {

    0%,
    100% {
        opacity: 0.3;
        transform: scaleY(1);
    }

    50% {
        opacity: 1;
        transform: scaleY(1.3);
    }
}

/* Scroll reveal animation class */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal--visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

.reveal-delay-4 {
    transition-delay: 0.4s;
}

/* ═══════════════════════════════════════════════════════════════
   LIGHTBOX MODAL
   ═══════════════════════════════════════════════════════════════ */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.95);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.lightbox--active {
    display: flex;
    opacity: 1;
}

.lightbox__close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 2.5rem;
    cursor: pointer;
    z-index: 10;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.lightbox__close:hover,
.lightbox__close:active {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.1);
}

.lightbox__body {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 600px;
    width: 100%;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.lightbox__img {
    width: 100%;
    max-height: 60vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    background: var(--color-surface);
}

.lightbox__info {
    text-align: center;
    padding: 0 16px;
    width: 100%;
}

.lightbox__title {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 2px;
    color: var(--color-text);
    margin-bottom: 8px;
}

.lightbox__sets {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 2px;
    display: block;
    margin-bottom: 12px;
}

.lightbox__note {
    font-size: 1.05rem;
    color: var(--color-text);
    font-weight: 500;
    background: rgba(212, 168, 83, 0.1);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-accent);
    line-height: 1.5;
}

.lightbox__nav {
    position: absolute;
    bottom: 30px;
    display: flex;
    gap: 16px;
    z-index: 10;
}

.lightbox__nav-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
    font-size: 1.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.lightbox__nav-btn:hover,
.lightbox__nav-btn:active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE FIRST PRIORITY 📱
   ═══════════════════════════════════════════════════════════════ */

/* ── TABLET (max 1024px) ── */
@media (max-width: 1024px) {
    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about__image-wrapper {
        max-width: 400px;
        margin: 0 auto;
    }

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

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

/* ── MOBILE (max 768px) — MOST IMPORTANT ── */
@media (max-width: 768px) {

    /* Hero - compact for quick scroll to plan */
    .hero {
        min-height: 85vh;
    }

    .hero__title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }

    .hero__subtitle {
        font-size: 0.95rem;
        margin-bottom: 28px;
    }

    .hero__scroll-indicator {
        bottom: 20px;
    }

    /* Plan section - THE MAIN EVENT on mobile */
    .plan {
        padding: 60px 0 60px;
    }

    .plan__header {
        margin-bottom: 32px;
    }

    .plan__intro {
        font-size: 1rem;
    }

    /* Horizontal scrollable tabs for one-thumb operation */
    .plan__tabs {
        display: flex;
        gap: 8px;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding: 4px 0 12px;
        margin-bottom: 24px;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

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

    .plan__tab {
        padding: 12px 22px;
        font-size: 0.75rem;
        flex-shrink: 0;
        border-radius: var(--radius-sm);
    }

    /* Day cards — optimize for mobile reading */
    .day-card {
        padding: 24px 16px;
        border-radius: var(--radius-md);
    }

    .day-card__watermark {
        font-size: 6rem;
        top: -10px;
        right: -5px;
    }

    .day-card__header {
        margin-bottom: 24px;
        padding-bottom: 20px;
    }

    .day-card__title {
        font-size: clamp(1.4rem, 5vw, 2rem);
    }

    .day-card__focus {
        font-size: 0.85rem;
    }

    .day-card__phase {
        margin-bottom: 24px;
    }

    .phase-label {
        font-size: 0.7rem;
        margin-bottom: 12px;
    }

    /* Exercise cards — FULL WIDTH on mobile for easy reading */
    .exercise-item:not(.exercise-item--simple) {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 16px;
        border-radius: var(--radius-sm);
    }

    /* Images bigger on mobile — the whole point is seeing the exercise */
    .exercise-item__images {
        grid-template-columns: 1fr 1fr;
        max-width: 100%;
    }

    .exercise-item__images img {
        height: 100px;
        border-radius: 6px;
    }

    .exercise-item__images::after {
        font-size: 0.6rem;
        bottom: 6px;
        right: 6px;
        padding: 4px 10px;
        opacity: 1;
    }

    /* Exercise info — larger text for gym readability */
    .exercise-item__info .exercise-item__name,
    h5.exercise-item__name {
        font-size: 1.05rem;
    }

    .exercise-item__sets {
        font-size: 0.9rem;
    }

    .exercise-item__note {
        font-size: 0.9rem;
        padding: 8px 12px;
    }

    .exercise-item__number {
        font-size: 1.5rem;
    }

    /* Simple exercises — touch-friendly */
    .exercise-item--simple {
        padding: 14px 16px;
        min-height: 48px;
    }

    .exercise-item--simple .exercise-item__name {
        font-size: 0.88rem;
    }

    .exercise-item__reps {
        font-size: 0.8rem;
    }

    /* Context cards */
    .context-card {
        padding: 24px 20px;
    }

    .context-card__subtitle {
        font-size: 1.3rem;
    }

    .context-card p {
        font-size: 0.85rem;
    }

    /* About section — below plan, less priority */
    .about {
        padding: 60px 0;
    }

    .about__image-wrapper {
        max-width: 280px;
    }

    .about__paragraph {
        font-size: 0.92rem;
    }

    .about__stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .about__stat {
        padding: 14px;
    }

    /* Philosophy */
    .philosophy {
        padding: 60px 0;
    }

    .philosophy__grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .philosophy__block {
        padding: 28px 20px;
    }

    /* CTA */
    .cta {
        min-height: 50vh;
    }

    .cta__title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .cta__subtitle {
        font-size: 0.95rem;
    }

    /* Footer */
    .footer {
        padding: 40px 0;
    }

    .footer__name {
        font-size: 2rem;
    }

    /* Plan note */
    .plan__note {
        padding: 16px 18px;
        margin-top: 24px;
    }

    .plan__note p {
        font-size: 0.85rem;
    }

    /* Lightbox — fullscreen on mobile */
    .lightbox {
        padding: 10px;
    }

    .lightbox__close {
        top: 10px;
        right: 10px;
        width: 44px;
        height: 44px;
        font-size: 2rem;
    }

    .lightbox__img {
        max-height: 50vh;
        border-radius: var(--radius-sm);
    }

    .lightbox__title {
        font-size: 1.5rem;
    }

    .lightbox__sets {
        font-size: 1rem;
    }

    .lightbox__note {
        font-size: 0.95rem;
        padding: 10px 16px;
    }

    .lightbox__nav {
        bottom: 20px;
    }

    .lightbox__nav-btn {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}

/* ── SMALL PHONES (max 480px) ── */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .hero {
        min-height: 75vh;
    }

    .hero__title {
        font-size: clamp(2rem, 10vw, 3rem);
    }

    .hero__label {
        font-size: 0.6rem;
        letter-spacing: 3px;
        margin-bottom: 20px;
    }

    .hero__subtitle {
        font-size: 0.88rem;
    }

    .btn--primary {
        padding: 16px 32px;
        font-size: 0.78rem;
        width: 100%;
        text-align: center;
    }

    .btn--cta {
        padding: 18px 36px;
        font-size: 0.85rem;
        width: 100%;
        text-align: center;
    }

    .section-title {
        font-size: clamp(1.6rem, 6vw, 2.2rem);
    }

    .section-label {
        font-size: 0.65rem;
        letter-spacing: 3px;
    }

    /* Plan tabs — even more compact */
    .plan__tab {
        padding: 10px 16px;
        font-size: 0.68rem;
        letter-spacing: 2px;
    }

    /* Day card — super tight for small screens */
    .day-card {
        padding: 18px 12px;
    }

    .day-card__title {
        font-size: 1.3rem;
    }

    .day-card__watermark {
        font-size: 5rem;
    }

    /* Exercise images — still prominent */
    .exercise-item__images img {
        height: 90px;
    }

    .exercise-item__info .exercise-item__name,
    h5.exercise-item__name {
        font-size: 1rem;
    }

    .exercise-item__note {
        font-size: 0.85rem;
    }

    /* Context cards very compact */
    .context-card {
        padding: 20px 16px;
    }

    .context-card__subtitle {
        font-size: 1.15rem;
    }

    /* About section */
    .about__image-wrapper {
        max-width: 240px;
    }

    /* Lightbox */
    .lightbox__title {
        font-size: 1.3rem;
    }

    .lightbox__img {
        max-height: 45vh;
    }

    .lightbox__nav-btn {
        width: 44px;
        height: 44px;
    }

    /* Scroll lock helper */
    body.lightbox-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
    }
}

/* ── TOUCH DEVICE ENHANCEMENTS ── */
@media (hover: none) and (pointer: coarse) {

    /* Larger touch targets */
    .exercise-item--simple {
        min-height: 52px;
        padding: 16px;
    }

    .plan__tab {
        min-height: 44px;
    }

    /* Remove hover effects that don't work on touch */
    .exercise-item:not(.exercise-item--simple):hover {
        transform: none;
    }

    .context-card:hover {
        transform: none;
    }

    .about__stat:hover {
        transform: none;
    }

    .philosophy__block:hover {
        transform: none;
    }

    /* Exercise images always visible hint */
    .exercise-item__images::after {
        opacity: 1;
    }

    .exercise-item__images img {
        filter: grayscale(0%);
    }
}

/* ═══════════════════════════════════════════════════════════════
   PRINT / GYM MODE (EXPORT TO PDF)
   ═══════════════════════════════════════════════════════════════ */
@media print {
    @page {
        margin: 1cm;
        size: A4 portrait;
    }

    body {
        background: #ffffff !important;
        color: #000000 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    /* Hide everything except Plan and Footer Certificate */
    .hero,
    .about,
    .philosophy,
    .cta,
    .plan__tabs,
    .plan__actions,
    .lightbox,
    .plan__header,
    .plan__intro {
        display: none !important;
    }

    .container {
        max-width: 100% !important;
        padding: 0 !important;
    }

    .plan {
        background: none !important;
        padding: 0 !important;
    }

    /* Format Context Cards for print */
    .plan__context {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
        margin-bottom: 30px;
        page-break-after: avoid;
    }

    .context-card {
        background: none !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        padding: 15px !important;
        color: #000 !important;
    }

    .context-card__title,
    .context-card__subtitle,
    .context-card p {
        color: #000 !important;
    }

    /* Make ALL days visible and force page breaks */
    .day-card {
        display: block !important;
        page-break-inside: avoid;
        page-break-before: always;
        background: none !important;
        border: 2px solid #000 !important;
        box-shadow: none !important;
        padding: 20px !important;
        margin-bottom: 20px !important;
        animation: none !important;
    }

    /* Ensure day 1 doesn't split from context cards if possible */
    .day-card[data-day="1"] {
        page-break-before: auto;
    }

    .day-card__watermark {
        color: rgba(0, 0, 0, 0.05) !important;
        z-index: -1;
    }

    .day-card__title,
    .day-card__focus,
    .day-card__label,
    .phase-label,
    .exercise-item__name,
    h5.exercise-item__name,
    .exercise-item__sets,
    .exercise-item__reps {
        color: #000 !important;
    }

    .phase-label {
        border-bottom-color: #ccc !important;
    }

    /* Simplify Exercise cards for print */
    .exercise-item:not(.exercise-item--simple) {
        background: none !important;
        border: 1px solid #eee !important;
        box-shadow: none !important;
        padding: 10px !important;
        page-break-inside: avoid;
    }

    .exercise-item--simple {
        background: none !important;
        border-left-color: #000 !important;
    }

    .exercise-item__note {
        background: #f5f5f5 !important;
        color: #333 !important;
        border-left-color: #666 !important;
    }

    /* Add a checkbox for manual tracking in print */
    .exercise-item__number {
        position: relative !important;
        color: #999 !important;
        font-size: 1.2rem !important;
        top: 0 !important;
        display: inline-flex;
        align-items: center;
        margin-bottom: 5px;
    }

    .exercise-item__number::before {
        content: '';
        display: inline-block;
        width: 14px;
        height: 14px;
        border: 1px solid #000;
        margin-right: 8px;
        border-radius: 2px;
    }

    .exercise-item__images img {
        filter: grayscale(0%) !important;
    }

    /* Footer formatting */
    .footer {
        background: none !important;
        border-top: 1px dashed #ccc !important;
        padding: 20px 0 !important;
        page-break-before: auto;
    }

    .footer p {
        color: #000 !important;
    }
}