/* ========================================
   THEME SYSTEM - Light & Dark Mode
   Light: Branco + Laranja + Amarelo
   Dark: Preto + Branco + Roxo
   ======================================== */

:root {
    /* Light Theme (Default) - Branco/Laranja/Amarelo */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f5f5f5;

    --primary: #FF6B35;      /* Laranja vibrante */
    --primary-hover: #FF5722;
    --primary-light: #FFB4A2;

    --secondary: #FDB833;    /* Amarelo dourado */
    --secondary-hover: #FFCA28;
    --secondary-light: #FFE082;

    --accent: #FFAA00;       /* Laranja-amarelo */

    --text: #1a1a1a;
    --text-muted: #666666;
    --text-light: #999999;

    --border: #e5e5e5;
    --border-light: #f0f0f0;

    --shadow-sm: 0 2px 4px rgba(255, 107, 53, 0.08);
    --shadow-md: 0 4px 12px rgba(255, 107, 53, 0.12);
    --shadow-lg: 0 8px 24px rgba(255, 107, 53, 0.16);

    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
}

/* Dark Theme - Preto/Branco/Roxo */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;

    --primary: #8B5CF6;      /* Roxo vibrante */
    --primary-hover: #7C3AED;
    --primary-light: #A78BFA;

    --secondary: #C084FC;    /* Roxo claro */
    --secondary-hover: #A855F7;
    --secondary-light: #DDD6FE;

    --accent: #E879F9;       /* Rosa-roxo */

    --text: #ffffff;
    --text-muted: #a1a1aa;
    --text-light: #71717a;

    --border: #27272a;
    --border-light: #3f3f46;

    --shadow-sm: 0 2px 4px rgba(139, 92, 246, 0.1);
    --shadow-md: 0 4px 12px rgba(139, 92, 246, 0.15);
    --shadow-lg: 0 8px 24px rgba(139, 92, 246, 0.2);

    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
}

/* ========================================
   SMOOTH TRANSITIONS
   ======================================== */

* {
    transition: background-color 0.3s ease,
                border-color 0.3s ease,
                color 0.3s ease,
                box-shadow 0.3s ease;
}

body {
    background: var(--bg-primary);
    color: var(--text);
}

/* ========================================
   GRADIENT UTILITIES
   ======================================== */

.gradient-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="dark"] .gradient-text {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   CARD STYLES
   ======================================== */

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    filter: brightness(1.1);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
}

/* ========================================
   THEME TOGGLE BUTTON
   ======================================== */

.theme-toggle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: rotate(180deg);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

/* ========================================
   ANIMATIONS & EFFECTS
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ========================================
   GLASS MORPHISM
   ======================================== */

.glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass {
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

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

@media (max-width: 768px) {
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }

    .card {
        padding: 1.5rem;
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
*:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}