/* Malik Portfolio - Optimized Styles */

/* CSS Variables for theming */
:root {
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    --secondary-50: #ecfdf5;
    --secondary-100: #d1fae5;
    --secondary-200: #a7f3d0;
    --secondary-300: #6ee7b7;
    --secondary-400: #34d399;
    --secondary-500: #10b981;
    --secondary-600: #059669;
    --secondary-700: #047857;
    --secondary-800: #065f46;
    --secondary-900: #064e3b;
    
    --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;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    --transition: all 0.2s ease-in-out;
    --transition-slow: all 0.3s ease-in-out;
}

/* Dark mode variables */
.dark-mode {
    --bg-primary: var(--gray-900);
    --bg-secondary: var(--gray-800);
    --bg-tertiary: var(--gray-700);
    --text-primary: var(--gray-50);
    --text-secondary: var(--gray-300);
    --text-tertiary: var(--gray-400);
    --border-color: var(--gray-600);
}

/* Light mode variables */
body:not(.dark-mode) {
    --bg-primary: white;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-500);
    --border-color: var(--gray-200);
}

/* Base styles */
html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary-600);
    color: white;
    padding: 12px 16px;
    text-decoration: none;
    border-radius: 0 0 4px 0;
    z-index: 10000;
    font-weight: 600;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid var(--primary-400);
    outline-offset: 2px;
}

/* Layout utilities */
.section {
    padding: 4rem 0;
}

.section-padding {
    padding: 6rem 0;
}

.container-custom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography */
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.text-6xl { font-size: 3.75rem; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

/* Spacing */
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }

.mt-8 { margin-top: 2rem; }
.mt-16 { margin-top: 4rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }

/* Grid system */
.grid {
    display: grid;
    gap: 1rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }

/* Flexbox utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.space-y-8 > * + * { margin-top: 2rem; }

/* Background colors */
.bg-gray-50 { background-color: var(--bg-secondary); }
.bg-gray-900 { background-color: var(--bg-primary); }

/* Text colors */
.text-white { color: white; }
.text-gray-600 { color: var(--text-secondary); }
.text-gray-900 { color: var(--text-primary); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
}

.btn-outline {
    border: 2px solid var(--primary-600);
    color: var(--primary-600);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary-600);
    color: white;
    transform: translateY(-2px);
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    transition: var(--transition-slow);
    border: 1px solid var(--border-color);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

/* Skill bars */
.skill-bar {
    background: var(--gray-200);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.dark-mode .skill-bar {
    background: var(--gray-700);
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-600), var(--secondary-600));
    border-radius: 4px;
    transition: width 2s ease;
}

/* Timeline */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-600), var(--secondary-600));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 1rem;
    width: 16px;
    height: 16px;
    background: var(--primary-600);
    border-radius: 50%;
    border: 4px solid var(--bg-primary);
    transform: translateX(-50%);
    z-index: 10;
}

/* Social links */
.social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-600);
    color: white;
    transform: translateY(-2px);
}

/* CTA buttons */
.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    margin: 2rem 0;
}

@media (min-width: 640px) {
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

/* Header enhancements */
.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.dark-mode .header.scrolled {
    background: rgba(17, 24, 39, 0.95);
}

.dark-mode .header {
    background: rgba(17, 24, 39, 0.9); /* Fundo escuro translúcido */
    border-bottom: 1px solid var(--border-color); /* Adiciona uma linha sutil de separação */
}

/* Navigation active state */
.nav-links a.active {
    color: var(--primary-100);
    font-weight: 600;
}

/* Dark mode toggle */
.dark-mode-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.dark-mode-toggle:hover {
    background-color: var(--bg-tertiary);
}

/* Mobile menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* Form styles */
form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

label {
    font-weight: 500;
    color: var(--text-primary);
}

input, textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* Form messages */
.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    animation: slideIn 0.3s ease-out;
}

.form-message.success {
    background-color: var(--secondary-50);
    border: 1px solid var(--secondary-200);
    color: var(--secondary-800);
}

.form-message.error {
    background-color: #fee2e2;
    border: 1px solid #ef4444;
    color: #991b1b;
}

.dark-mode .form-message.success {
    background-color: var(--secondary-900);
    color: var(--secondary-200);
}

.dark-mode .form-message.error {
    background-color: #7f1d1d;
    color: #fca5a5;
}

/* Animations */
@keyframes slideIn {
    from {
        transform: translateY(-10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

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

/* Typewriter effect */
.typewriter::after {
    content: '|';
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-slow);
    z-index: 1000;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Loading states */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.loading-dots {
    display: inline-block;
    position: relative;
    width: 80px;
    height: 80px;
}

.loading-dots div {
    position: absolute;
    top: 33px;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--primary-600);
    animation-timing-function: cubic-bezier(0, 1, 1, 0);
}

.loading-dots div:nth-child(1) {
    left: 8px;
    animation: loading1 0.6s infinite;
}

.loading-dots div:nth-child(2) {
    left: 8px;
    animation: loading2 0.6s infinite;
}

.loading-dots div:nth-child(3) {
    left: 32px;
    animation: loading2 0.6s infinite;
}

.loading-dots div:nth-child(4) {
    left: 56px;
    animation: loading3 0.6s infinite;
}

@keyframes loading1 {
    0% { transform: scale(0); }
    100% { transform: scale(1); }
}

@keyframes loading3 {
    0% { transform: scale(1); }
    100% { transform: scale(0); }
}

@keyframes loading2 {
    0% { transform: translate(0, 0); }
    100% { transform: translate(24px, 0); }
}

/* Responsive design */
@media (max-width: 1024px) {
    .grid-cols-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .timeline::before {
        left: 2rem;
    }
    
    .timeline-dot {
        left: 2rem;
    }
    
    .timeline-item .card {
        margin-left: 4rem;
    }
}

@media (max-width: 768px) {
    .text-5xl { font-size: 2.5rem; }
    .text-4xl { font-size: 2rem; }
    .text-3xl { font-size: 1.75rem; }
    
    .grid-cols-2,
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-color);
    }
    
    .nav-links.mobile-open {
        display: flex;
    }
    
    .profile-img {
        width: 150px;
        height: 150px;
        font-size: 3rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section-padding {
        padding: 4rem 0;
    }
    
    .timeline::before {
        left: 1rem;
    }
    
    .timeline-dot {
        left: 1rem;
    }
    
    .timeline-item .card {
        margin-left: 2.5rem;
    }
}

@media (max-width: 480px) {
    .container-custom {
        padding: 0 0.75rem;
    }
    
    .text-5xl { font-size: 2rem; }
    .text-4xl { font-size: 1.75rem; }
    
    .profile-img {
        width: 120px;
        height: 120px;
        font-size: 2.5rem;
    }
    
    .social-links {
        gap: 0.75rem;
    }
    
    .social-links a {
        width: 2.5rem;
        height: 2.5rem;
    }
    
    .cta-buttons {
        gap: 0.75rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
}

/* Print styles */
@media print {
    .header,
    .social-links,
    .cta-buttons,
    .scroll-to-top,
    .dark-mode-toggle,
    .mobile-menu-toggle {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #000;
        border: 2px solid #000;
    }
    
    .btn-outline {
        border-width: 3px;
    }
    
    .card {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .typewriter::after {
        animation: none;
    }
}