/* ============================================================
   HGG AI Design Studio — Global Styles
   Dark Glassmorphism Theme
   ============================================================ */

:root {
    /* Colors */
    --color-bg: #0a0a1a;
    --color-bg-secondary: #111127;
    --color-surface: rgba(255, 255, 255, 0.04);
    --color-surface-hover: rgba(255, 255, 255, 0.08);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    --color-text: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-primary-glow: rgba(99, 102, 241, 0.3);
    --color-accent: #8b5cf6;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #06b6d4;

    /* Spacing */
    --sidebar-width: 260px;
    --sidebar-collapsed: 64px;
    --header-height: 64px;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadow */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);

    /* Transition */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-hover); }

/* ---- App Wrapper ---- */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, rgba(17, 17, 39, 0.95), rgba(10, 10, 26, 0.98));
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 50;
    transition: var(--transition);
}

.sidebar--collapsed { width: var(--sidebar-collapsed); }
.sidebar--collapsed .sidebar__title,
.sidebar--collapsed .sidebar__user-info { display: none; }

.sidebar__header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar__logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar__logo-icon { width: 32px; height: 32px; flex-shrink: 0; }

.sidebar__title {
    font-size: 14px;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    white-space: nowrap;
}

.sidebar__toggle {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.sidebar__toggle:hover { background: var(--color-surface-hover); color: var(--color-text); }

.sidebar__nav {
    flex: 1;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
.sidebar__link:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}
.sidebar__link--active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary-hover);
    box-shadow: inset 3px 0 0 var(--color-primary);
}

.sidebar__footer {
    padding: 16px;
    border-top: 1px solid var(--color-border);
}

.sidebar__user {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.sidebar__avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}

.sidebar__user-name {
    font-size: 13px;
    font-weight: 500;
}

.sidebar__logout {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 0;
    transition: var(--transition);
}
.sidebar__logout:hover { color: var(--color-danger); }

/* ---- Main Content ---- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px 32px;
    transition: var(--transition);
    min-height: 100vh;
}
.main-content--full { margin-left: var(--sidebar-collapsed); }

/* ---- Page Header ---- */
.page-header {
    margin-bottom: 32px;
}
.page-header__title {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #e2e8f0, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.page-header__subtitle {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* ---- Cards ---- */
.card {
    background: var(--color-surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}
.card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}
.card__title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}
.card__description {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}
.btn--primary {
    background: linear-gradient(135deg, #6366f1, #7c3aed);
    color: white;
    box-shadow: var(--shadow-glow);
}
.btn--primary:hover {
    background: linear-gradient(135deg, #818cf8, #8b5cf6);
    transform: translateY(-1px);
    box-shadow: 0 0 30px var(--color-primary-glow);
}
.btn--secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn--secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
}
.btn--danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}
.btn--sm { padding: 6px 14px; font-size: 13px; }
.btn--lg { padding: 14px 28px; font-size: 16px; }

/* ---- Forms ---- */
.form-group {
    margin-bottom: 20px;
}
.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}
.form-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}
.form-input::placeholder { color: var(--color-text-muted); }
.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* ---- Alerts ---- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    animation: slideDown 0.3s ease;
}
.alert--success { background: rgba(34, 197, 94, 0.1); border: 1px solid rgba(34, 197, 94, 0.2); color: #86efac; }
.alert--error { background: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.2); color: #fca5a5; }
.alert__close { background: none; border: none; color: inherit; cursor: pointer; font-size: 18px; opacity: 0.6; }

/* ---- Grid ---- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ---- Tables ---- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}
.table {
    width: 100%;
    border-collapse: collapse;
}
.table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}
.table td {
    padding: 12px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--color-border);
}
.table tr:hover td { background: var(--color-surface-hover); }

/* ---- Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 999px;
}
.badge--primary { background: rgba(99, 102, 241, 0.15); color: #a5b4fc; }
.badge--success { background: rgba(34, 197, 94, 0.15); color: #86efac; }
.badge--warning { background: rgba(245, 158, 11, 0.15); color: #fcd34d; }
.badge--danger { background: rgba(239, 68, 68, 0.15); color: #fca5a5; }

/* ---- Upload Zone ---- */
.upload-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}
.upload-zone:hover {
    border-color: var(--color-primary);
    background: rgba(99, 102, 241, 0.04);
}
.upload-zone__icon { font-size: 32px; margin-bottom: 8px; opacity: 0.5; }
.upload-zone__text { font-size: 14px; color: var(--color-text-secondary); }

/* ---- Animations ---- */
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
    .sidebar { transform: translateX(-100%); }
    .sidebar--collapsed { transform: translateX(0); width: var(--sidebar-collapsed); }
    .main-content { margin-left: 0; padding: 20px 16px; }
}
@media (max-width: 640px) {
    .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}