/* ============================================================================
   LANDING PAGE - SpendIA
   Utilise le système de design unifié - Finance Premium & Trust
   ============================================================================ */

/* Variables spécifiques au landing (en complément du design system) */
:root {
    --primary-gradient: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 48px rgba(52, 211, 153, 0.2);
}

body {
    overflow-x: hidden;
    background: radial-gradient(ellipse at top, #0F172A 0%, #020617 100%);
    color: var(--text-primary);
    line-height: var(--line-height-base);
}

html {
    scroll-behavior: smooth;
}

/* ============================================================================
   NAVIGATION
   ============================================================================ */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(2, 6, 23, 0.8);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

@media (min-width: 769px) {
    nav {
        backdrop-filter: blur(var(--blur-lg));
        -webkit-backdrop-filter: blur(var(--blur-lg));
    }
}

nav.scrolled {
    background: rgba(2, 6, 23, 0.95);
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid rgba(52, 211, 153, 0.15);
}

.nav-container {
    max-width: 1400px;
    width: 100%; 
    margin: 0 auto;
    padding: var(--spacing-5) var(--spacing-10);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: transform 0.3s var(--ease-out);
}

.logo:hover {
    transform: translateY(-2px);
}

.logo img {
    width: 42px;
    height: 42px;
    border-radius: var(--radius);
    box-shadow: 0 0 20px rgba(52, 211, 153, 0.2);
    transition: box-shadow 0.3s ease;
}

.logo:hover img {
    box-shadow: 0 0 30px rgba(52, 211, 153, 0.4);
}

.nav-links {
    display: flex;
    gap: var(--spacing-10);
    list-style: none;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    position: relative;
    transition: color 0.3s ease;
    padding: var(--spacing-2) 0;
}

.nav-links a:not(.btn):hover {
    color: var(--accent-primary);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s var(--ease-out);
    border-radius: var(--radius-sm);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.btn {
    padding: var(--spacing-3) var(--spacing-8);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all 0.3s var(--ease-out);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    position: relative;
    overflow: hidden;
    line-height: var(--line-height-tight);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-on-accent);
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(52, 211, 153, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(52, 211, 153, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    background: rgba(52, 211, 153, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-3px);
}

.btn-learn-more {
    margin-top: 0.5rem;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-16) var(--spacing-12) var(--spacing-12);
    width: 100%;
    box-sizing: border-box;
    padding-top: calc(80px + var(--spacing-8));
}

.aurora-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    background: radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.5), #020617);
}

.aurora-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
    will-change: transform;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: #34D399;
    top: -15%;
    left: -10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: #2DD4BF;
    bottom: -10%;
    right: -5%;
    animation-delay: -5s;
}

.shape-3 {
    width: 400px;
    height: 400px;
    background: #38BDF8;
    top: 40%;
    left: 40%;
    animation-delay: -10s;
    opacity: 0.2;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-split {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: start;
    position: relative;
    z-index: 1;
    padding: 0 var(--spacing-4);
    box-sizing: border-box;
}

.hero-content {
    animation: slideInLeft 0.8s var(--ease-out);
}

.hero-auth {
    animation: slideInRight 0.8s var(--ease-out);
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-content h1 {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    font-weight: var(--font-weight-black);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-6);
    letter-spacing: -0.03em;
    word-wrap: break-word; 
}

.hero-highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    position: relative;
}

.hero-highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(52, 211, 153, 0.2);
    z-index: -1;
    border-radius: var(--radius-sm);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-10);
    max-width: 90%;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-10);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    font-size: var(--font-size-md);
    color: var(--text-primary);
    transition: transform 0.2s ease;
}

.hero-feature:hover {
    transform: translateX(10px);
}

.hero-feature-icon {
    width: 28px;
    height: 28px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-on-accent);
    font-weight: var(--font-weight-extrabold);
    font-size: var(--font-size-sm);
    box-shadow: 0 4px 12px rgba(52, 211, 153, 0.3);
}

.auth-card {
    background: var(--glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-12);
    box-shadow:
        0 30px 60px -12px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.08) inset;
    width: 100%;
    max-width: 500px;
    margin-left: auto;
    transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.auth-card:hover {
    transform: translateY(-10px);
    box-shadow:
        0 40px 70px -15px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(52, 211, 153, 0.25) inset,
        0 0 48px rgba(52, 211, 153, 0.15);
    border-color: var(--accent-primary);
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0.9;
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-10);
}

.auth-logo {
    width: 88px;
    height: 88px;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-6);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
    transition: transform 0.5s var(--ease-out);
}

.auth-card:hover .auth-logo {
    transform: scale(1.08) rotate(5deg);
}

.auth-header h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-2);
    font-weight: var(--font-weight-extrabold);
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-base);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
}

.auth-form label,
.auth-form .form-field label {
    display: block;
    margin-bottom: var(--spacing-3);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
}

.auth-form .form-field {
    display: flex;
    flex-direction: column;
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper input {
    width: 100%;
    padding-right: var(--spacing-12);
}

.toggle-password {
    position: absolute;
    right: var(--spacing-3);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-2);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    z-index: 10;
}

.toggle-password:hover {
    color: var(--accent-primary);
    background: rgba(52, 211, 153, 0.1);
}

.toggle-password:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.auth-form input {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4) var(--spacing-5);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: all 0.2s ease;
}

.auth-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.2);
}

.auth-form input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.auth-form button[type="submit"] {
    margin-top: var(--spacing-4);
    padding: var(--spacing-5) var(--spacing-4);
    font-size: var(--font-size-md);
}

.error-message {
    color: var(--danger);
    font-size: var(--font-size-sm);
    text-align: center;
    min-height: var(--spacing-6);
    font-weight: var(--font-weight-medium);
    margin-top: var(--spacing-2);
}

.auth-toggle {
    margin-top: var(--spacing-6);
    text-align: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border-color);
}

.auth-toggle p {
    color: var(--text-muted);
}

.auth-toggle a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 700;
    margin-left: 0.5rem;
    transition: color 0.2s;
}

.auth-toggle a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

.section {
    padding: var(--spacing-20) var(--spacing-8);
    position: relative;
    z-index: 1;
    width: 100%;
    box-sizing: border-box;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
}

.features-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); 
    gap: var(--spacing-10);
    width: 100%;
}

.feature-card {
    background: var(--glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-12);
    transition: all 0.3s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-soft);
    background: var(--surface-hover);
}

.feature-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.15), rgba(96, 165, 250, 0.15));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-6);
    border: 1px solid rgba(52, 211, 153, 0.25);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-4);
    font-weight: var(--font-weight-bold);
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.75;
    font-size: var(--font-size-base);
}

.steps-container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.step {
    display: flex;
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-16);
    position: relative;
}

.step::before {
    content: '';
    position: absolute;
    left: 31px;
    top: 70px;
    bottom: calc(var(--spacing-16) * -1);
    width: 2px;
    background: rgba(255, 255, 255, 0.1);
    z-index: -1;
}

.step:last-child::before {
    display: none;
}

.step-number {
    width: 64px;
    height: 64px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-on-accent);
    flex-shrink: 0;
    box-shadow: 0 0 30px rgba(52, 211, 153, 0.3);
}

.step-content h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-3);
}

.step-content p {
    font-size: var(--font-size-md);
    color: var(--text-muted);
    line-height: 1.7;
}

.stats {
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
    width: 100%;
}

.stats-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); 
    gap: var(--spacing-8);
    position: relative;
    z-index: 2;
    padding: var(--spacing-16) var(--spacing-8);
}

.stat-item {
    text-align: center;
    color: #000;
}

.stat-item h4 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-2);
}

.stat-item p {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    opacity: 0.8;
}

.cta-section {
    background: linear-gradient(to bottom, #0a0a0b 0%, rgba(30, 30, 32, 0.5) 100%);
    text-align: center;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.cta-section h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-6);
}

footer {
    background: #050505;
    padding: var(--spacing-20) var(--spacing-8) var(--spacing-8);
    color: var(--text-muted);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-16);
    margin-bottom: var(--spacing-16);
}

.footer-section h4 {
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-6);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-3);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #fbbf24;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
}

.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) forwards;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    z-index: 1001; 
}

@media (max-width: 1024px) {
    .hero-split {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
        max-width: 600px;
    }

    .hero-features {
        align-items: center;
        justify-content: center;
        flex-wrap: wrap;
    }

    .auth-card {
        margin: 0 auto;
        max-width: 480px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-8);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-8);
    }

    .nav-container {
        padding: var(--spacing-5) var(--spacing-8);
    }
}

/* ============================================================================
   RESPONSIVE - TABLET
   ============================================================================ */

@media (max-width: 1024px) {
    .hero-split {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
    }

    .auth-card {
        margin: 0 auto;
        max-width: 500px;
    }

    .hero {
        padding-top: calc(80px + var(--spacing-12));
    }
}

/* ============================================================================
   RESPONSIVE - MOBILE
   ============================================================================ */

@media (max-width: 768px) {
    .nav-container {
        padding: 1rem 1.5rem;
        padding-top: max(1rem, env(safe-area-inset-top));
        padding-left: max(1.5rem, env(safe-area-inset-left));
        padding-right: max(1.5rem, env(safe-area-inset-right));
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 11, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .logo {
        font-size: 1.25rem;
    }

    .logo img {
        width: 36px;
        height: 36px;
    }

    .hero {
        padding: 6rem 1.5rem 3rem;
        padding-top: max(6rem, calc(env(safe-area-inset-top) + 5rem));
        padding-bottom: max(3rem, env(safe-area-inset-bottom));
        min-height: auto;
    }

    .hero-split {
        padding: 0;
        gap: 3rem;
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: clamp(2rem, 8vw, 2.5rem);
        line-height: 1.15;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
        max-width: 100%;
    }

    .hero-features {
        gap: 0.875rem;
        margin-bottom: 1.5rem;
    }

    .hero-feature {
        font-size: 0.9375rem;
    }

    .auth-card {
        padding: 2rem 1.5rem;
        max-width: 100%;
        margin-left: 0;
    }

    .auth-tabs {
        gap: 0.5rem;
    }

    .auth-tab {
        font-size: 0.9375rem;
        padding: 0.75rem 1.25rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .feature-icon {
        width: 56px;
        height: 56px;
    }

    .feature-card h3 {
        font-size: 1.25rem;
    }

    .step {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
        align-items: center;
        padding: 0 1rem;
    }

    .step::before {
        display: none;
    }

    .step-number {
        font-size: 2rem;
    }

    .step h3 {
        font-size: 1.375rem;
    }

    .cta-section {
        padding: 4rem 1.5rem;
        padding-bottom: max(4rem, env(safe-area-inset-bottom));
    }

    .cta-section h2 {
        font-size: clamp(1.75rem, 6vw, 2rem);
        padding: 0 1rem;
    }

    .cta-section p {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2.5rem;
        padding: 0 1rem;
    }

    .footer-links {
        justify-content: center;
    }

    /* Amélioration des stats */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .stat-card {
        padding: 2rem 1.5rem;
    }

    /* Amélioration des sections */
    section {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
        padding-left: max(1.5rem, env(safe-area-inset-left));
        padding-right: max(1.5rem, env(safe-area-inset-right));
    }

    /* Optimisation des boutons */
    .btn {
        width: 100%;
        justify-content: center;
        min-height: 48px;
        font-size: 1rem;
    }

    .btn-learn-more {
        max-width: 300px;
        margin-left: auto;
        margin-right: auto;
    }

    /* Désactiver les animations Aurora sur mobile */
    .aurora-shape {
        display: none;
    }
}

/* Optimisations pour très petits écrans iPhone SE et similaires */
@media (max-width: 374px) {
    .nav-container {
        padding: 0.875rem 1rem;
        padding-top: max(0.875rem, env(safe-area-inset-top));
    }

    .logo {
        font-size: 1.125rem;
    }

    .logo img {
        width: 32px;
        height: 32px;
    }

    .hero {
        padding: 4.5rem 1rem 2.5rem;
    }

    .hero-content h1 {
        font-size: 1.875rem;
        line-height: 1.2;
    }

    .hero-description {
        font-size: 0.9375rem;
    }

    .hero-features {
        flex-direction: column;
        align-items: flex-start;
    }

    .auth-card {
        padding: 1.75rem 1.25rem;
    }

    .auth-tabs {
        flex-direction: row;
        gap: 0.375rem;
    }

    .auth-tab {
        font-size: 0.875rem;
        padding: 0.625rem 1rem;
        flex: 1;
    }

    .feature-card {
        padding: 1.75rem 1.25rem;
    }

    .feature-icon {
        width: 48px;
        height: 48px;
    }

    .feature-card h3 {
        font-size: 1.125rem;
    }

    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }

    .cta-section h2 {
        font-size: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

/* Optimisations paysage pour mobiles */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 3rem 1.5rem 2rem;
    }

    .hero-split {
        gap: 2rem;
    }

    .auth-card {
        padding: 1.5rem;
    }

    section {
        padding-top: 2rem;
        padding-bottom: 2rem;
    }
}