/* ============================================================
   GAIA 3D — Design System
   Glassmorphism Organic Futurist Premium
   ============================================================ */

/* ── Imports ───────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Tokens ────────────────────────────────────────────────── */
:root {
    /* Couleurs principales */
    --gaia-dark: #1A1A1B;
    --gaia-light: #F2EFE9;
    --gaia-accent: #BF91FF;
    --gaia-accent-hover: #D4AFFF;
    --gaia-accent-dim: rgba(191, 145, 255, 0.15);

    /* Surfaces glassmorphism */
    --glass-bg: rgba(26, 26, 27, 0.72);
    --glass-bg-light: rgba(242, 239, 233, 0.06);
    --glass-border: rgba(242, 239, 233, 0.08);
    --glass-border-hover: rgba(191, 145, 255, 0.25);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --glass-shadow-hover: 0 12px 48px rgba(191, 145, 255, 0.15);
    --glass-blur: blur(20px);

    /* Texte */
    --text-primary: #F2EFE9;
    --text-secondary: rgba(242, 239, 233, 0.6);
    --text-muted: rgba(242, 239, 233, 0.35);

    /* Status */
    --success: #4ADE80;
    --warning: #FBBF24;
    --error: #F87171;
    --info: #60A5FA;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

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

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--gaia-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--gaia-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--gaia-accent-hover);
}

/* ── Background Ambient ────────────────────────────────────── */
.gaia-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: var(--gaia-dark);
    overflow: hidden;
}

.gaia-bg::before,
.gaia-bg::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.25;
    animation: float 20s ease-in-out infinite;
}

.gaia-bg::before {
    width: 600px;
    height: 600px;
    background: var(--gaia-accent);
    top: -200px;
    right: -100px;
    animation-delay: -5s;
}

.gaia-bg::after {
    width: 500px;
    height: 500px;
    background: #6366F1;
    bottom: -150px;
    left: -100px;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -40px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ── Glass Card ────────────────────────────────────────────── */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-smooth);
}

.glass:hover {
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-hover);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: 2rem;
    transition: all var(--transition-smooth);
}

.glass-card:hover {
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-2px);
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gaia-accent), #9B6FD9);
    color: var(--gaia-dark);
    box-shadow: 0 4px 15px rgba(191, 145, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(191, 145, 255, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--glass-bg-light);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
    border-color: var(--gaia-accent);
    color: var(--gaia-accent);
    background: var(--gaia-accent-dim);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}

.btn-ghost:hover {
    color: var(--gaia-accent);
    background: var(--gaia-accent-dim);
}

.btn-danger {
    background: rgba(248, 113, 113, 0.15);
    color: var(--error);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.btn-danger:hover {
    background: rgba(248, 113, 113, 0.25);
    border-color: var(--error);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.8125rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-sm);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.btn .spinner {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ── Inputs ────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
    letter-spacing: 0.02em;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(242, 239, 233, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    outline: none;
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus {
    border-color: var(--gaia-accent);
    box-shadow: 0 0 0 3px var(--gaia-accent-dim);
    background: rgba(242, 239, 233, 0.06);
}

.form-input:invalid:not(:placeholder-shown) {
    border-color: var(--error);
}

.form-error {
    font-size: 0.75rem;
    color: var(--error);
    margin-top: 0.3rem;
}

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23F2EFE9' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* ── Auth Layout ───────────────────────────────────────────── */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.auth-logo span {
    background: linear-gradient(135deg, var(--gaia-accent), #D4AFFF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ── Dashboard Layout ──────────────────────────────────────── */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-logo {
    font-size: 1.25rem;
    font-weight: 700;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 1.5rem;
}

.sidebar-logo span {
    background: linear-gradient(135deg, var(--gaia-accent), #D4AFFF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 400;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--glass-bg-light);
}

.nav-item.active {
    color: var(--gaia-accent);
    background: var(--gaia-accent-dim);
    font-weight: 500;
}

.nav-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding-top: 1rem;
    border-top: 1px solid var(--glass-border);
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* ── Project Cards Grid ────────────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.project-card {
    padding: 1.5rem;
    cursor: pointer;
}

.project-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.project-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.project-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.project-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.55rem;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-active {
    background: rgba(74, 222, 128, 0.12);
    color: var(--success);
}

.badge-processing {
    background: rgba(251, 191, 36, 0.12);
    color: var(--warning);
}

.badge-error {
    background: rgba(248, 113, 113, 0.12);
    color: var(--error);
}

/* ── Toast / Notifications ─────────────────────────────────── */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    pointer-events: all;
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    font-size: 0.875rem;
    color: var(--text-primary);
    animation: slideIn 0.3s var(--transition-spring);
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.toast.toast-success { border-left: 3px solid var(--success); }
.toast.toast-error { border-left: 3px solid var(--error); }
.toast.toast-warning { border-left: 3px solid var(--warning); }
.toast.toast-info { border-left: 3px solid var(--info); }

.toast.fade-out {
    animation: slideOut 0.3s ease-in forwards;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    width: 100%;
    max-width: 520px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
    padding: 2rem;
    transform: translateY(20px) scale(0.97);
    transition: transform var(--transition-spring);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--glass-bg-light);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
}

.modal-close:hover {
    background: var(--gaia-accent-dim);
    color: var(--gaia-accent);
}

.modal-footer {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--glass-border);
}

/* ── Loading ───────────────────────────────────────────────── */
.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--gaia-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading-screen.hide {
    opacity: 0;
    pointer-events: none;
}

.loader {
    width: 40px;
    height: 40px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--gaia-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ── Empty State ───────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.4;
}

.empty-state-title {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state-text {
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

/* ── Progress Bar ──────────────────────────────────────────── */
.progress-bar {
    height: 4px;
    background: var(--glass-bg-light);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gaia-accent), #D4AFFF);
    border-radius: 2px;
    transition: width var(--transition-smooth);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-smooth);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
}