/* ========================================
   RESET & BASE
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Couleurs */
    --black: #0A0A0A;
    --black-lighter: #141414;
    --black-card: #1A1A1A;
    --spotify-green: #1DB954;
    --spotify-green-muted: rgba(29, 185, 84, 0.1);
    --white: #FFFFFF;
    --gray-light: #B3B3B3;
    --gray-medium: #8A8A8A;
    --gray-dark: #2A2A2A;

    /* Typographies */
    --font-primary: 'Sora', sans-serif;
    --font-secondary: 'Outfit', sans-serif;
    --font-mono: 'Space Mono', monospace;

    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

/* ========================================
   TYPOGRAPHIE
   ======================================== */

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.02em;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--spotify-green);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

/* ========================================
   LANGUAGE TOGGLE
   ======================================== */

.lang-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    padding: 0.5rem 1.25rem;
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 2rem;
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.lang-toggle:hover {
    border-color: var(--spotify-green);
    color: var(--spotify-green);
    box-shadow: 0 4px 15px rgba(29, 185, 84, 0.15);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--black) 0%, var(--black-lighter) 100%);
    overflow: hidden;
}

.grain-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='3.5' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    pointer-events: none;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--spotify-green-muted);
    border: 1px solid rgba(29, 185, 84, 0.2);
    border-radius: 2rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
    color: var(--spotify-green);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--spotify-green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 8vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.03em;
    max-width: 900px;
}

.hero-title .highlight {
    color: var(--spotify-green);
    position: relative;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--gray-light);
    max-width: 650px;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--spotify-green);
    color: var(--black);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    border: 2px solid var(--spotify-green);
    position: relative;
    overflow: hidden;
}

.cta-primary:hover {
    background: transparent;
    color: var(--spotify-green);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(29, 185, 84, 0.2);
}

.cta-primary svg {
    transition: transform 0.3s ease;
}

.cta-primary:hover svg {
    transform: translateX(4px);
}

.social-proof {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--gray-dark);
    align-items: center;
}

.proof-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.proof-value {
    font-family: var(--font-primary);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--spotify-green);
}

.proof-label {
    font-size: 0.875rem;
    color: var(--gray-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-mono);
}

.proof-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-dark);
}

/* ========================================
   PROBLEM SECTION
   ======================================== */

.problem-section {
    padding: var(--spacing-3xl) 0;
    background: var(--black-lighter);
}

.problem-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.problem-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.problem-card:hover {
    border-color: rgba(29, 185, 84, 0.3);
    transform: translateX(4px);
}

.problem-icon {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--spotify-green);
    font-weight: 700;
    flex-shrink: 0;
}

.problem-card p {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.5;
}

.problem-conclusion {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.05), rgba(29, 185, 84, 0.02));
    border: 1px solid rgba(29, 185, 84, 0.2);
    border-radius: 0.75rem;
}

.conclusion-text {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--gray-light);
    line-height: 1.6;
}

.highlight-text {
    color: var(--white);
    font-weight: 600;
}

/* ========================================
   ALGO EDUCATION SECTION
   ======================================== */

.algo-education-section {
    padding: var(--spacing-3xl) 0;
    background: var(--black);
}

.algo-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--gray-light);
    max-width: 700px;
    line-height: 1.6;
    margin-top: calc(var(--spacing-xl) * -1);
    margin-bottom: var(--spacing-2xl);
}

.algo-block {
    margin-bottom: var(--spacing-2xl);
}

.algo-block:last-child {
    margin-bottom: 0;
}

.algo-block-title {
    font-family: var(--font-primary);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--white);
    position: relative;
    padding-left: 1rem;
}

.algo-block-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--spotify-green);
    border-radius: 2px;
}

.algo-block-desc {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
}

/* Playlist Type Cards */
.algo-playlist-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.algo-playlist-card {
    padding: var(--spacing-xl);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    text-align: center;
}

.algo-playlist-card:hover {
    border-color: rgba(29, 185, 84, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(29, 185, 84, 0.08);
}

.algo-playlist-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(29, 185, 84, 0.1);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
}

.algo-playlist-name {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.algo-playlist-desc {
    font-size: 0.875rem;
    color: var(--gray-medium);
    line-height: 1.5;
}

/* Algorithm Flow */
.algo-flow {
    display: flex;
    align-items: flex-start;
    gap: 0;
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}

.algo-flow-step {
    flex: 1;
    min-width: 160px;
    padding: var(--spacing-lg);
    background: rgba(29, 185, 84, 0.04);
    border: 1px solid rgba(29, 185, 84, 0.15);
    border-radius: 0.75rem;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.algo-flow-step:hover {
    background: rgba(29, 185, 84, 0.08);
    border-color: rgba(29, 185, 84, 0.3);
    transform: translateY(-2px);
}

.algo-flow-step--final {
    background: rgba(29, 185, 84, 0.1);
    border-color: rgba(29, 185, 84, 0.3);
}

.algo-flow-number {
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--spotify-green);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
    opacity: 0.7;
}

.algo-flow-title {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.algo-flow-desc {
    font-size: 0.8125rem;
    color: var(--gray-medium);
    line-height: 1.4;
}

.algo-flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    padding: 0 0.25rem;
    align-self: center;
    opacity: 0.5;
}

/* Insight / Analogy */
.algo-insight {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.04), rgba(29, 185, 84, 0.01));
    border-left: 3px solid var(--spotify-green);
    border-radius: 0 0.75rem 0.75rem 0;
    margin-bottom: var(--spacing-xl);
}

.algo-insight p {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.7;
    font-style: italic;
}

/* Punch Line */
.algo-punch {
    margin-bottom: var(--spacing-xl);
}

.algo-punch p {
    font-family: var(--font-primary);
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.4;
    max-width: 800px;
}

/* Conclusion + CTA */
.algo-conclusion {
    padding: var(--spacing-xl);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 0.75rem;
    text-align: center;
}

.algo-conclusion p {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.algo-conclusion .cta-primary {
    margin-top: 0;
}

/* ========================================
   RESULTS SECTION
   ======================================== */

.results-section {
    padding: var(--spacing-3xl) 0;
    background: var(--black);
}

.results-section > .container {
    display: flex;
    flex-direction: column;
}

.results-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.case-study {
    padding: var(--spacing-lg);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 1rem;
    position: relative;
    overflow: hidden;
}

.case-study::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--spotify-green), transparent);
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.case-artist {
    font-family: var(--font-primary);
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 700;
}

.case-period {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    background: rgba(29, 185, 84, 0.1);
    border: 1px solid rgba(29, 185, 84, 0.3);
    border-radius: 2rem;
    color: var(--spotify-green);
}

.case-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.highlight-stat {
    padding: var(--spacing-md);
    background: rgba(29, 185, 84, 0.05);
    border: 1px solid rgba(29, 185, 84, 0.2);
    border-radius: 0.75rem;
}

.stat-value {
    font-family: var(--font-primary);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
    color: var(--spotify-green);
    margin-bottom: 0.25rem;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.case-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--black-lighter);
    border-radius: 0.5rem;
}

.metric-item {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 0.5rem;
}

.metric-number {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
}

.metric-text {
    font-size: 0.875rem;
    color: var(--gray-medium);
}

.metric-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: rgba(29, 185, 84, 0.2);
    color: var(--spotify-green);
    border-radius: 0.25rem;
    font-weight: 700;
}

.case-screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.screenshot-wrapper {
    position: relative;
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--gray-dark);
    background: var(--black-lighter);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.screenshot-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(29, 185, 84, 0.1);
}

.screenshot-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   PROCESS SECTION
   ======================================== */

.process-section {
    padding: var(--spacing-3xl) 0;
    background: var(--black-lighter);
}

.process-steps {
    display: grid;
    gap: var(--spacing-xl);
}

.process-step {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    position: relative;
}

.process-step:hover {
    border-color: rgba(29, 185, 84, 0.3);
    transform: translateY(-4px);
}

.step-number {
    font-family: var(--font-primary);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    color: rgba(29, 185, 84, 0.1);
    line-height: 1;
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    user-select: none;
}

.step-title {
    font-family: var(--font-primary);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.step-description {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* ========================================
   INCLUDED SECTION
   ======================================== */

.included-section {
    padding: var(--spacing-3xl) 0;
    background: var(--black);
}

.included-grid {
    display: grid;
    gap: var(--spacing-md);
}

.included-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 0.5rem;
    font-size: 1.125rem;
    color: var(--gray-light);
    transition: all 0.3s ease;
}

.included-item:hover {
    border-color: rgba(29, 185, 84, 0.3);
    transform: translateX(4px);
}

.check-icon {
    flex-shrink: 0;
}

/* ========================================
   FAQ SECTION
   ======================================== */

.faq-section {
    padding: var(--spacing-3xl) 0;
    background: var(--black-lighter);
}

.faq-list {
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    padding: var(--spacing-xl);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(29, 185, 84, 0.3);
}

.faq-question {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.faq-answer {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.6;
}

/* ========================================
   FORM SECTION
   ======================================== */

.form-section {
    padding: var(--spacing-3xl) 0;
    background: var(--black);
}

.form-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

.form-subtitle {
    font-size: 1.125rem;
    color: var(--gray-light);
    margin-top: var(--spacing-md);
}

.application-form {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    background: var(--black-card);
    border: 1px solid var(--gray-dark);
    border-radius: 1rem;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--black-lighter);
    border: 1px solid var(--gray-dark);
    border-radius: 0.5rem;
    color: var(--white);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--spotify-green);
    box-shadow: 0 0 0 3px rgba(29, 185, 84, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23B3B3B3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.application-form .cta-primary {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-lg);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

.form-notice {
    margin-top: var(--spacing-lg);
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-medium);
    line-height: 1.5;
}

/* Form Loading State */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: '';
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: translateY(-50%) rotate(360deg); }
}

/* Form Success Message */
.form-success-message {
    display: none;
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-success-icon {
    margin-bottom: var(--spacing-lg);
}

.form-success-title {
    font-family: var(--font-primary);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.form-success-text {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

/* Form Error Message */
.form-error-message {
    margin-top: var(--spacing-md);
    padding: 0.75rem 1rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 0.5rem;
    color: #ef4444;
    font-size: 0.875rem;
    text-align: center;
    animation: fadeInUp 0.3s ease;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    background: var(--black-lighter);
    border-top: 1px solid var(--gray-dark);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--gray-medium);
    font-size: 0.875rem;
}

.footer-info p {
    color: var(--gray-medium);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-dark);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--gray-medium);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (min-width: 768px) {
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .results-grid .case-study:first-child {
        grid-column: 1 / -1;
    }

    .process-steps {
        grid-template-columns: repeat(3, 1fr);
    }

    .included-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .social-proof {
        justify-content: flex-start;
    }
}

@media (max-width: 767px) {
    .proof-divider {
        display: none;
    }

    .step-number {
        font-size: 3rem;
    }

    .case-screenshots {
        grid-template-columns: 1fr;
    }

    .algo-playlist-types {
        grid-template-columns: 1fr;
    }

    .algo-flow {
        flex-direction: column;
        align-items: stretch;
    }

    .algo-flow-arrow {
        transform: rotate(90deg);
        min-width: auto;
        padding: 0.25rem 0;
    }

    .algo-flow-step {
        min-width: auto;
    }
}