/* ==============================================
   landing.css — Landing Page + Auth Modal Styles
   ============================================== */

/* ===== LANDING PAGE ===== */

.landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

/* Animated gradient bg */
.landing::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 20%,
            rgba(0, 214, 143, 0.08) 0%,
            transparent 50%),
        radial-gradient(ellipse at 70% 80%,
            rgba(34, 197, 94, 0.05) 0%,
            transparent 50%);
    animation: bgFloat 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes bgFloat {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(2%, -2%) rotate(1deg);
    }

    66% {
        transform: translate(-1%, 1%) rotate(-0.5deg);
    }
}

/* ===== NAVBAR ===== */

.landing-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-8);
    position: relative;
    z-index: 10;
}

.landing-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.landing-logo .logo-icon {
    font-size: 1.5rem;
}

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

.landing-nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Language switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    background: var(--bg-surface);
    border-radius: var(--radius-full);
    padding: var(--space-1);
    border: 1px solid var(--border);
}

.lang-switcher-btn {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    color: var(--text-tertiary);
    line-height: 1;
}

.lang-switcher-btn:hover {
    color: var(--text-primary);
    background: var(--bg-surface-hover);
}

.lang-switcher-btn.active {
    background: var(--primary);
    color: white;
}

/* Nav login button */
.btn-nav-login {
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-full);
    background: var(--primary);
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    letter-spacing: 0.01em;
}

.btn-nav-login:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

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

.landing-hero {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-8);
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--primary-subtle);
    border: 1px solid rgba(0, 214, 143, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--primary-text);
    margin-bottom: var(--space-6);
    animation: fadeIn 0.6s ease forwards;
}

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

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-4);
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.1s;
    opacity: 0;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-text) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: var(--space-10);
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

/* Features grid */
.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3) var(--space-8);
    margin-bottom: var(--space-10);
    text-align: left;
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.3s;
    opacity: 0;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.hero-feature .feature-check {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--success-subtle);
    color: var(--success);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
}

/* CTA buttons */
.hero-cta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.4s;
    opacity: 0;
}

.btn-primary {
    padding: var(--space-3) var(--space-8);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    font-weight: 600;
    font-size: var(--font-size-md);
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(0, 214, 143, 0.3);
    letter-spacing: 0.01em;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 214, 143, 0.4);
}

.btn-secondary {
    padding: var(--space-3) var(--space-8);
    border-radius: var(--radius-full);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-md);
    border: 1px solid var(--border-strong);
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--bg-surface-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* ===== AUTH MODAL ===== */

.modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    animation: fadeIn 0.2s ease forwards;
}

.modal-backdrop.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    padding: var(--space-10);
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: var(--z-modal);
    box-shadow: var(--shadow-lg);
    animation: fadeInScale 0.3s ease forwards;
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
    font-size: 1.2rem;
}

.modal-close:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    text-align: center;
}

/* Auth form */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
}

.password-hint {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.btn-submit {
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    background: var(--primary);
    color: white;
    font-weight: 600;
    font-size: var(--font-size-md);
    transition: all var(--transition-fast);
    margin-top: var(--space-2);
    width: 100%;
}

.btn-submit:hover {
    background: var(--primary-hover);
}

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

.btn-submit.loading {
    position: relative;
    color: transparent;
}

.btn-submit.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.auth-divider {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin: var(--space-2) 0;
}

.auth-footer {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--space-4);
}

.auth-footer a {
    color: var(--primary-text);
    font-weight: 600;
    cursor: pointer;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.auth-link {
    font-size: var(--font-size-sm);
    color: var(--primary-text);
    cursor: pointer;
    text-align: right;
}

.auth-link:hover {
    text-decoration: underline;
}

/* Error message */
.auth-error {
    display: none;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    background: var(--danger-subtle);
    color: var(--danger-text);
    font-size: var(--font-size-sm);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.auth-error.visible {
    display: block;
    animation: fadeIn 0.2s ease forwards;
}

/* Success (check email) */
.check-email-screen {
    text-align: center;
    padding: var(--space-6) 0;
}

.check-email-screen .email-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
}

.check-email-screen h3 {
    margin-bottom: var(--space-3);
}

.check-email-screen p {
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

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

@media (max-width: 768px) {
    .landing-nav {
        padding: var(--space-3) var(--space-4);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-features {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .landing-logo span:not(.logo-icon):not(.logo-accent) {
        display: none;
    }

    .modal {
        margin: var(--space-4);
        padding: var(--space-6);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-xl);
    }

    .lang-switcher {
        gap: 0;
    }

    .landing-hero {
        padding: var(--space-4);
    }
}