/* ============================================
   RICARDO.ETI.BR - DESIGN SYSTEM
   Modern Dark Dashboard Theme
   ============================================ */

:root {
    /* ========================================
       COLOR PALETTE
       ======================================== */
    
    /* Background Colors */
    --bg-primary: #0d0d0f;
    --bg-secondary: #151518;
    --bg-tertiary: #1e1e24;
    --bg-card: #1a1a20;
    --bg-hover: #25252d;
    --bg-active: #2a2a35;
    
    /* Grid Pattern Overlay */
    --bg-grid: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    
    /* Primary Accent Colors - Blue/Purple Gradient */
    --primary-50: #e8f0ff;
    --primary-100: #c5d4ff;
    --primary-200: #9fb8ff;
    --primary-300: #7896ff;
    --primary-400: #5a7aff;
    --primary-500: #4c64ff;
    --primary-600: #3d4fe6;
    --primary-700: #2f3acc;
    --primary-800: #2228b3;
    --primary-900: #161a99;
    
    /* Secondary Accent - Cyan */
    --cyan-400: #22d3ee;
    --cyan-500: #06b6d4;
    --cyan-600: #0891b2;
    
    /* Success - Green */
    --success-400: #4ade80;
    --success-500: #22c55e;
    --success-600: #16a34a;
    
    /* Warning - Orange/Yellow */
    --warning-400: #fb923c;
    --warning-500: #f97316;
    --warning-600: #ea580c;
    
    /* Danger - Pink/Red */
    --danger-400: #f472b6;
    --danger-500: #ec4899;
    --danger-600: #db2777;
    
    /* Purple Accent */
    --purple-400: #c084fc;
    --purple-500: #a855f7;
    --purple-600: #9333ea;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-muted: #52525b;
    
    /* Border Colors */
    --border-light: rgba(255, 255, 255, 0.08);
    --border-medium: rgba(255, 255, 255, 0.12);
    --border-heavy: rgba(255, 255, 255, 0.2);
    
    /* ========================================
       GRADIENTS
       ======================================== */
    --gradient-primary: linear-gradient(135deg, var(--primary-500) 0%, var(--purple-500) 100%);
    --gradient-cyan: linear-gradient(135deg, var(--cyan-400) 0%, var(--primary-500) 100%);
    --gradient-success: linear-gradient(135deg, var(--success-400) 0%, var(--cyan-500) 100%);
    --gradient-danger: linear-gradient(135deg, var(--danger-400) 0%, var(--purple-500) 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
    
    /* ========================================
       TYPOGRAPHY
       ======================================== */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Font Sizes */
    --text-xs: 0.6875rem;    /* 11px */
    --text-sm: 0.8125rem;    /* 13px */
    --text-base: 0.9375rem;  /* 15px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.375rem;     /* 22px */
    --text-2xl: 1.75rem;     /* 28px */
    --text-3xl: 2.25rem;     /* 36px */
    
    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    
    /* ========================================
       SPACING
       ======================================== */
    --spacing-0: 0;
    --spacing-1: 0.25rem;    /* 4px */
    --spacing-2: 0.5rem;     /* 8px */
    --spacing-3: 0.75rem;    /* 12px */
    --spacing-4: 1rem;       /* 16px */
    --spacing-5: 1.25rem;    /* 20px */
    --spacing-6: 1.5rem;     /* 24px */
    --spacing-8: 2rem;       /* 32px */
    --spacing-10: 2.5rem;    /* 40px */
    --spacing-12: 3rem;      /* 48px */
    --spacing-16: 4rem;      /* 64px */
    
    /* ========================================
       BORDER RADIUS
       ======================================== */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.25rem;   /* 20px */
    --radius-full: 9999px;
    
    /* ========================================
       SHADOWS
       ======================================== */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    --shadow-glow-primary: 0 0 20px rgba(76, 100, 255, 0.3);
    --shadow-glow-cyan: 0 0 20px rgba(34, 211, 238, 0.3);
    --shadow-glow-purple: 0 0 20px rgba(168, 85, 247, 0.3);
    
    /* ========================================
       TRANSITIONS
       ======================================== */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* ========================================
       LAYOUT
       ======================================== */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 72px;
    --header-height: 64px;
    --container-max: 1400px;
    
    /* ========================================
       Z-INDEX SCALE
       ======================================== */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
    --z-notification: 500;
}

/* ============================================
   BASE STYLES
   ============================================ */

*, *::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-family);
    background-color: var(--bg-primary);
    background-image: var(--bg-grid);
    color: var(--text-primary);
    line-height: var(--leading-normal);
    min-height: 100vh;
}

/* ============================================
   TYPOGRAPHY STYLES
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); }
h6 { font-size: var(--text-sm); }

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
}

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-muted { color: var(--text-muted); }

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   CARD COMPONENT
   ============================================ */

.card {
    background: var(--bg-card);
    background-image: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--border-light);
}

.card-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

/* ============================================
   BUTTON COMPONENT
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    font-family: var(--font-family);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-glow-primary);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 30px rgba(76, 100, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-heavy);
}

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

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

.btn-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--text-xs);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-6);
    font-size: var(--text-base);
}

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

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-light);
    padding: var(--spacing-4);
    z-index: var(--z-sticky);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-name {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.nav-menu {
    list-style: none;
    flex: 1;
}

.nav-item {
    margin-bottom: var(--spacing-1);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

.nav-link.active {
    background: var(--bg-active);
    color: var(--text-primary);
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-badge {
    margin-left: auto;
    background: var(--danger-500);
    color: var(--white);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* ============================================
   HEADER
   ============================================ */

.header {
    position: fixed;
    left: var(--sidebar-width);
    right: 0;
    top: 0;
    height: var(--header-height);
    background: rgba(21, 21, 24, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-6);
    z-index: var(--z-sticky);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.search-input {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2) var(--spacing-4);
    color: var(--text-primary);
    font-size: var(--text-sm);
    width: 280px;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(76, 100, 255, 0.1);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    margin-left: var(--sidebar-width);
    padding-top: var(--header-height);
    min-height: 100vh;
}

.content-wrapper {
    padding: var(--spacing-6);
    max-width: var(--container-max);
    margin: 0 auto;
}

/* ============================================
   STATS CARDS
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-5);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.primary { background: rgba(76, 100, 255, 0.15); color: var(--primary-400); }
.stat-icon.success { background: rgba(34, 197, 94, 0.15); color: var(--success-400); }
.stat-icon.warning { background: rgba(249, 115, 22, 0.15); color: var(--warning-400); }
.stat-icon.danger { background: rgba(236, 72, 153, 0.15); color: var(--danger-400); }

.stat-value {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-md);
}

.stat-change.positive {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success-400);
}

.stat-change.negative {
    background: rgba(236, 72, 153, 0.15);
    color: var(--danger-400);
}

/* ============================================
   PROGRESS BAR
   ============================================ */

.progress {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-bar.success { background: var(--gradient-success); }
.progress-bar.danger { background: var(--gradient-danger); }

/* ============================================
   AVATAR
   ============================================ */

.avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--bg-card);
}

.avatar-group {
    display: flex;
}

.avatar-group .avatar {
    margin-left: -8px;
    transition: transform var(--transition-fast);
}

.avatar-group .avatar:hover {
    transform: translateY(-2px);
    z-index: 1;
}

/* ============================================
   BADGE
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
}

.badge-primary {
    background: rgba(76, 100, 255, 0.15);
    color: var(--primary-400);
}

.badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success-400);
}

.badge-warning {
    background: rgba(249, 115, 22, 0.15);
    color: var(--warning-400);
}

.badge-danger {
    background: rgba(236, 72, 153, 0.15);
    color: var(--danger-400);
}

/* ============================================
   TABLE
   ============================================ */

.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.table th {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.table tr:hover td {
    background: var(--bg-hover);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }

.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }

.text-center { text-align: center; }
.text-right { text-align: right; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* ============================================
   FORM ELEMENTS
   ============================================ */

.input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-family: var(--font-family);
    transition: all var(--transition-fast);
}

.input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(76, 100, 255, 0.1);
}

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

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-fade-in { animation: fadeIn var(--transition-base) ease-out; }
.animate-slide-up { animation: slideUp var(--transition-slow) ease-out; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-spin { animation: spin 1s linear infinite; }

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

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .header {
        left: 0;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .search-input {
        width: 200px;
    }
    
    .task-board {
        grid-template-columns: 1fr;
        overflow-x: auto;
    }
    
    .sidebar {
        width: 100%;
        transform: translateY(-100%);
    }
    
    .sidebar.open {
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .search-input {
        width: 200px;
    }
}