/* ════════════════════════════════════════════════════════════
   ApoioTEA — Design System v2.0
   Tokens, Components & Utilities
   ════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* ── Color Tokens ── */
    --ds-primary: #0F766E;
    --ds-primary-light: #14B8A6;
    --ds-primary-lighter: #CCFBF1;
    --ds-primary-dark: #115E59;
    --ds-primary-rgb: 15, 118, 110;

    --ds-accent: #6C63FF;
    --ds-accent-light: #8B83FF;
    --ds-accent-rgb: 108, 99, 255;

    --ds-success: #10B981;
    --ds-success-light: #D1FAE5;
    --ds-warning: #F59E0B;
    --ds-warning-light: #FEF3C7;
    --ds-danger: #EF4444;
    --ds-danger-light: #FEE2E2;
    --ds-info: #3B82F6;
    --ds-info-light: #DBEAFE;

    /* ── Neutral Palette ── */
    --ds-gray-50: #F8FAFC;
    --ds-gray-100: #F1F5F9;
    --ds-gray-200: #E2E8F0;
    --ds-gray-300: #CBD5E1;
    --ds-gray-400: #94A3B8;
    --ds-gray-500: #64748B;
    --ds-gray-600: #475569;
    --ds-gray-700: #334155;
    --ds-gray-800: #1E293B;
    --ds-gray-900: #0F172A;

    /* ── Semantic Colors ── */
    --ds-bg: #F0F4F8;
    --ds-bg-card: #FFFFFF;
    --ds-text: #1E293B;
    --ds-text-secondary: #64748B;
    --ds-text-muted: #94A3B8;
    --ds-border: #E2E8F0;
    --ds-border-light: #F1F5F9;

    /* ── Spacing Scale (4px grid) ── */
    --ds-space-1: 4px;
    --ds-space-2: 8px;
    --ds-space-3: 12px;
    --ds-space-4: 16px;
    --ds-space-5: 20px;
    --ds-space-6: 24px;
    --ds-space-8: 32px;
    --ds-space-10: 40px;
    --ds-space-12: 48px;
    --ds-space-16: 64px;

    /* ── Typography ── */
    --ds-font-heading: 'Plus Jakarta Sans', -apple-system, sans-serif;
    --ds-font-body: 'Inter', -apple-system, sans-serif;
    --ds-font-mono: 'JetBrains Mono', monospace;

    /* ── Border Radius ── */
    --ds-radius-sm: 8px;
    --ds-radius-md: 12px;
    --ds-radius-lg: 16px;
    --ds-radius-xl: 20px;
    --ds-radius-2xl: 24px;
    --ds-radius-full: 50px;

    /* ── Shadows ── */
    --ds-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --ds-shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --ds-shadow-lg: 0 10px 30px rgba(0,0,0,0.08);
    --ds-shadow-xl: 0 20px 50px rgba(0,0,0,0.1);

    /* ── Transitions ── */
    --ds-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --ds-transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ════════════════════════════════════
   RESET & BASE
   ════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--ds-font-body); color: var(--ds-text); background: var(--ds-bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ════════════════════════════════════
   TYPOGRAPHY
   ════════════════════════════════════ */
.ds-h1 { font-family: var(--ds-font-heading); font-size: 2rem; font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
.ds-h2 { font-family: var(--ds-font-heading); font-size: 1.5rem; font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
.ds-h3 { font-family: var(--ds-font-heading); font-size: 1.25rem; font-weight: 700; line-height: 1.3; }
.ds-h4 { font-family: var(--ds-font-heading); font-size: 1.1rem; font-weight: 600; line-height: 1.35; }
.ds-body { font-size: 0.95rem; line-height: 1.6; }
.ds-small { font-size: 0.85rem; line-height: 1.5; }
.ds-tiny { font-size: 0.75rem; line-height: 1.4; }
.ds-label { font-size: 0.82rem; font-weight: 600; color: var(--ds-text-secondary); letter-spacing: 0.02em; text-transform: uppercase; }

/* ════════════════════════════════════
   BUTTONS
   ════════════════════════════════════ */
.ds-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 20px; border-radius: var(--ds-radius-md); border: none;
    font-family: var(--ds-font-heading); font-size: 0.9rem; font-weight: 600;
    transition: var(--ds-transition); white-space: nowrap;
    min-height: 44px; /* Touch friendly */
}
.ds-btn:active { transform: scale(0.97); }

.ds-btn-primary { background: var(--ds-primary); color: white; box-shadow: 0 4px 12px rgba(var(--ds-primary-rgb), 0.25); }
.ds-btn-primary:hover { background: var(--ds-primary-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(var(--ds-primary-rgb), 0.3); }

.ds-btn-accent { background: var(--ds-accent); color: white; box-shadow: 0 4px 12px rgba(var(--ds-accent-rgb), 0.25); }
.ds-btn-accent:hover { background: var(--ds-accent-light); }

.ds-btn-success { background: var(--ds-success); color: white; }
.ds-btn-danger { background: var(--ds-danger); color: white; }
.ds-btn-warning { background: var(--ds-warning); color: white; }

.ds-btn-outline {
    background: transparent; border: 1.5px solid var(--ds-border);
    color: var(--ds-text); 
}
.ds-btn-outline:hover { border-color: var(--ds-primary); color: var(--ds-primary); background: var(--ds-primary-lighter); }

.ds-btn-ghost { background: transparent; color: var(--ds-text-secondary); }
.ds-btn-ghost:hover { background: var(--ds-gray-100); color: var(--ds-text); }

.ds-btn-sm { padding: 6px 14px; font-size: 0.82rem; min-height: 36px; border-radius: var(--ds-radius-sm); }
.ds-btn-lg { padding: 14px 28px; font-size: 1rem; min-height: 52px; border-radius: var(--ds-radius-lg); }
.ds-btn-block { width: 100%; }
.ds-btn-icon { width: 44px; height: 44px; padding: 0; border-radius: var(--ds-radius-md); }

/* ════════════════════════════════════
   CARDS
   ════════════════════════════════════ */
.ds-card {
    background: var(--ds-bg-card); border-radius: var(--ds-radius-xl);
    border: 1px solid var(--ds-border-light); padding: var(--ds-space-6);
    box-shadow: var(--ds-shadow-sm); transition: var(--ds-transition);
}
.ds-card:hover { box-shadow: var(--ds-shadow-md); }
.ds-card-header { padding-bottom: var(--ds-space-4); margin-bottom: var(--ds-space-4); border-bottom: 1px solid var(--ds-border-light); display: flex; align-items: center; justify-content: space-between; }
.ds-card-title { font-family: var(--ds-font-heading); font-size: 1rem; font-weight: 700; }

/* ════════════════════════════════════
   FORM ELEMENTS
   ════════════════════════════════════ */
.ds-input-group { margin-bottom: var(--ds-space-5); }
.ds-input-label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--ds-text-secondary); margin-bottom: 6px; }
.ds-input {
    width: 100%; padding: 12px 16px; border: 1.5px solid var(--ds-border);
    border-radius: var(--ds-radius-md); background: white; color: var(--ds-text);
    font-size: 0.95rem; transition: var(--ds-transition); outline: none;
    min-height: 44px;
}
.ds-input:focus { border-color: var(--ds-primary); box-shadow: 0 0 0 4px rgba(var(--ds-primary-rgb), 0.1); }
.ds-input::placeholder { color: var(--ds-text-muted); }
select.ds-input { cursor: pointer; }
textarea.ds-input { min-height: 120px; resize: vertical; }

.ds-input-icon-wrap { position: relative; }
.ds-input-icon-wrap .ds-input { padding-left: 44px; }
.ds-input-icon-wrap svg, .ds-input-icon-wrap i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--ds-text-muted); pointer-events: none; }

/* ════════════════════════════════════
   BADGES
   ════════════════════════════════════ */
.ds-badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 12px; border-radius: var(--ds-radius-full);
    font-size: 0.75rem; font-weight: 700; white-space: nowrap;
}
.ds-badge-primary { background: var(--ds-primary-lighter); color: var(--ds-primary-dark); }
.ds-badge-success { background: var(--ds-success-light); color: #065F46; }
.ds-badge-warning { background: var(--ds-warning-light); color: #92400E; }
.ds-badge-danger { background: var(--ds-danger-light); color: #991B1B; }
.ds-badge-info { background: var(--ds-info-light); color: #1E40AF; }
.ds-badge-neutral { background: var(--ds-gray-100); color: var(--ds-gray-600); }
.ds-badge-dot::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ════════════════════════════════════
   TABLES
   ════════════════════════════════════ */
.ds-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--ds-radius-lg); border: 1px solid var(--ds-border-light); background: white; }
.ds-table { width: 100%; border-collapse: collapse; min-width: 600px; }
.ds-table th { padding: 14px 20px; font-size: 0.8rem; font-weight: 600; color: var(--ds-text-muted); text-transform: uppercase; letter-spacing: 0.04em; text-align: left; background: var(--ds-gray-50); border-bottom: 1px solid var(--ds-border); white-space: nowrap; }
.ds-table td { padding: 14px 20px; border-bottom: 1px solid var(--ds-border-light); font-size: 0.9rem; vertical-align: middle; }
.ds-table tbody tr { transition: var(--ds-transition); }
.ds-table tbody tr:hover { background: var(--ds-gray-50); }
.ds-table tbody tr:last-child td { border-bottom: none; }

/* ════════════════════════════════════
   ALERTS
   ════════════════════════════════════ */
.ds-alert {
    padding: 14px 18px; border-radius: var(--ds-radius-md);
    display: flex; align-items: flex-start; gap: 12px; font-size: 0.9rem;
    margin-bottom: var(--ds-space-5);
}
.ds-alert-success { background: var(--ds-success-light); color: #065F46; border-left: 4px solid var(--ds-success); }
.ds-alert-warning { background: var(--ds-warning-light); color: #92400E; border-left: 4px solid var(--ds-warning); }
.ds-alert-danger { background: var(--ds-danger-light); color: #991B1B; border-left: 4px solid var(--ds-danger); }
.ds-alert-info { background: var(--ds-info-light); color: #1E40AF; border-left: 4px solid var(--ds-info); }

/* ════════════════════════════════════
   STAT CARDS (KPI)
   ════════════════════════════════════ */
.ds-stat {
    background: white; border-radius: var(--ds-radius-xl); padding: 22px;
    border: 1px solid var(--ds-border-light); box-shadow: var(--ds-shadow-sm);
    transition: var(--ds-transition); position: relative; overflow: hidden;
}
.ds-stat:hover { transform: translateY(-4px); box-shadow: var(--ds-shadow-lg); }
.ds-stat::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--ds-primary); border-radius: var(--ds-radius-xl) var(--ds-radius-xl) 0 0;
}
.ds-stat-icon { width: 48px; height: 48px; border-radius: var(--ds-radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 14px; }
.ds-stat-value { font-family: var(--ds-font-heading); font-size: 1.8rem; font-weight: 800; color: var(--ds-text); line-height: 1; }
.ds-stat-label { font-size: 0.82rem; color: var(--ds-text-secondary); font-weight: 500; margin-top: 6px; }
.ds-stat-trend { display: inline-flex; align-items: center; gap: 4px; font-size: 0.78rem; font-weight: 600; margin-top: 8px; padding: 2px 8px; border-radius: var(--ds-radius-full); }
.ds-stat-trend-up { background: var(--ds-success-light); color: #065F46; }
.ds-stat-trend-down { background: var(--ds-danger-light); color: #991B1B; }

/* ════════════════════════════════════
   AVATAR
   ════════════════════════════════════ */
.ds-avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-primary-light));
    display: flex; align-items: center; justify-content: center;
    color: white; font-weight: 700; font-size: 0.85rem; flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(var(--ds-primary-rgb), 0.2);
}
.ds-avatar-sm { width: 32px; height: 32px; font-size: 0.7rem; }
.ds-avatar-lg { width: 56px; height: 56px; font-size: 1.1rem; }

/* ════════════════════════════════════
   EMPTY STATE
   ════════════════════════════════════ */
.ds-empty { text-align: center; padding: 60px 20px; color: var(--ds-text-muted); }
.ds-empty-icon { font-size: 4rem; margin-bottom: 16px; opacity: 0.5; }
.ds-empty-title { font-family: var(--ds-font-heading); font-size: 1.3rem; font-weight: 700; color: var(--ds-text-secondary); margin-bottom: 8px; }
.ds-empty-text { font-size: 0.95rem; max-width: 400px; margin: 0 auto; }

/* ════════════════════════════════════
   MODAL
   ════════════════════════════════════ */
.ds-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); backdrop-filter: blur(4px); z-index: 9000; display: none; align-items: center; justify-content: center; padding: 20px; }
.ds-modal-overlay.show { display: flex; }
.ds-modal { background: white; border-radius: var(--ds-radius-2xl); padding: var(--ds-space-8); max-width: 500px; width: 100%; box-shadow: var(--ds-shadow-xl); animation: modalIn 0.3s ease; }
@keyframes modalIn { from { opacity: 0; transform: translateY(20px) scale(0.97); } to { opacity: 1; transform: translateY(0) scale(1); } }
.ds-modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--ds-space-6); }
.ds-modal-title { font-family: var(--ds-font-heading); font-size: 1.25rem; font-weight: 700; }
.ds-modal-close { width: 36px; height: 36px; border-radius: var(--ds-radius-sm); border: none; background: var(--ds-gray-100); color: var(--ds-text-secondary); font-size: 1.2rem; display: flex; align-items: center; justify-content: center; }
.ds-modal-close:hover { background: var(--ds-gray-200); }
.ds-modal-footer { display: flex; gap: 12px; justify-content: flex-end; margin-top: var(--ds-space-6); padding-top: var(--ds-space-4); border-top: 1px solid var(--ds-border-light); }

/* ════════════════════════════════════
   UTILITIES
   ════════════════════════════════════ */
.ds-flex { display: flex; }
.ds-flex-col { display: flex; flex-direction: column; }
.ds-flex-center { display: flex; align-items: center; justify-content: center; }
.ds-flex-between { display: flex; align-items: center; justify-content: space-between; }
.ds-gap-2 { gap: 8px; } .ds-gap-3 { gap: 12px; } .ds-gap-4 { gap: 16px; } .ds-gap-6 { gap: 24px; }
.ds-grid { display: grid; } .ds-grid-2 { grid-template-columns: 1fr 1fr; } .ds-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.ds-w-full { width: 100%; }
.ds-text-center { text-align: center; }
.ds-text-muted { color: var(--ds-text-muted); }
.ds-text-secondary { color: var(--ds-text-secondary); }
.ds-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ds-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════ */
@media (max-width: 768px) {
    .ds-grid-2, .ds-grid-3 { grid-template-columns: 1fr; }
    .ds-hide-mobile { display: none !important; }
    .ds-btn { font-size: 0.85rem; padding: 10px 16px; }
}
@media (min-width: 769px) {
    .ds-hide-desktop { display: none !important; }
}