/* ===================================
   GLOBAL STYLES
   Portfolio Website - Jerome Aceti
   ================================= */

/* CSS Custom Properties (Variables) */
:root {
    /* Color Palette */
    --primary-white: #ffffff;
    --primary-cream: #fefdf8;
    --accent-blue: #87ceeb;
    --accent-blue-light: #b6e2ff;
    --accent-blue-dark: #5fb3d4;
    --text-primary: #2c2c2c;
    --text-secondary: #666666;
    --text-light: #999999;
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
    
    /* Shadows */
    --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.15);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary-white) 0%, var(--primary-cream) 100%);
    min-height: 100vh;
    min-height: 100svh;
    overflow-x: hidden;
    position: relative;
}

/* Background Texture Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(135, 206, 235, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(135, 206, 235, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(135, 206, 235, 0.02) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Typography Styles */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

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

/* Link Styles */
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

/* Button Base Styles */
button {
    border: none;
    background: none;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-fast);
}

button:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* Image Styles */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Layout Base Classes */
.layout {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Navigation Base Styles */
.navigation {
    position: fixed;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    transition: var(--transition-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: var(--transition-medium);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--accent-blue-dark);
    transform: translateX(-8px);
}

.nav-link:hover::before {
    width: 100%;
}

/* Profile Image Base Styles */
.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    filter: grayscale(20%) contrast(1.1);
    transition: var(--transition-slow);
}

.profile-image:hover {
    filter: grayscale(0%) contrast(1.2);
    transform: scale(1.02);
}

/* Owner Name Base Styles */
.owner-name {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

/* Responsive Design - Tablet */
@media (max-width: 1024px) {
    .navigation {
        right: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 1.1rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Responsive Design - Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-xxl: 4rem;
    }
    
    .navigation {
        position: fixed;
        bottom: var(--spacing-md);
        right: 50%;
        top: auto;
        transform: translateX(50%);
        flex-direction: row;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        padding: var(--spacing-sm);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-medium);
    }
    
    .nav-link {
        font-size: 0.9rem;
        padding: var(--spacing-xs);
    }
    
    .nav-link:hover {
        transform: translateY(-4px);
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Responsive Design - Small Mobile */
@media (max-width: 480px) {
    .navigation {
        bottom: var(--spacing-sm);
        padding: var(--spacing-xs);
        gap: var(--spacing-xs);
    }
    
    .nav-link {
        font-size: 0.8rem;
        padding: var(--spacing-xs) 6px;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.slide-in-up {
    animation: slideInUp var(--transition-slow) ease-out;
}

.slide-in-right {
    animation: slideInRight var(--transition-slow) ease-out;
}

.slide-in-left {
    animation: slideInLeft var(--transition-slow) ease-out;
}

/* Keyframe Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Page Transition Animations */
.page-fade-in {
    animation: pageFadeIn 300ms ease-out;
}

.page-fade-out {
    animation: pageFadeOut 300ms ease-in forwards;
}

/* Initial load helpers (works with inline head snippet) */
.page-fade-in-initial {
    animation: pageFadeIn 300ms ease-out;
}

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

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

/* Layout Switcher */
.layout-switcher {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 1000;
    transition: all var(--transition-medium);
}

.layout-switcher.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
}

/* Layout Dropdown */
.layout-dropdown {
    position: relative;
}

.layout-dropdown-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(135, 206, 235, 0.3);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-subtle);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    min-width: 200px;
    justify-content: space-between;
}

.layout-dropdown-btn:hover {
    background: rgba(135, 206, 235, 0.1);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

.layout-dropdown-btn:active,
.layout-dropdown-btn.active {
    transform: translateY(0);
    box-shadow: var(--shadow-subtle);
    background: rgba(135, 206, 235, 0.15);
}

.dropdown-arrow {
    transition: transform var(--transition-fast);
    color: var(--accent-blue);
}

.layout-dropdown-btn.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.layout-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 8px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(135, 206, 235, 0.3);
    border-radius: var(--radius-md);
    backdrop-filter: blur(15px);
    box-shadow: var(--shadow-large);
    overflow: hidden;
    overflow-y: auto;
    max-height: 400px;
    z-index: 1001;
    opacity: 1;
    transform: translateY(0);
    transition: all var(--transition-fast);
}

.layout-dropdown-menu.hidden {
    opacity: 0;
    transform: translateY(-10px);
    visibility: hidden;
    pointer-events: none;
}

.dropdown-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-bottom: 1px solid rgba(135, 206, 235, 0.1);
}

.dropdown-option:last-child {
    border-bottom: none;
}

.dropdown-option:hover {
    background: rgba(135, 206, 235, 0.1);
    transform: translateX(4px);
}

.dropdown-option.active {
    background: rgba(135, 206, 235, 0.15);
    border-left: 3px solid var(--accent-blue);
}

.option-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-blue);
    background: rgba(135, 206, 235, 0.1);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.option-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
}

.switcher-icon {
    display: flex;
    flex-direction: column;
    gap: 2px;
    width: 16px;
    height: 12px;
}

.switcher-icon span {
    height: 2px;
    background: var(--accent-blue);
    border-radius: 1px;
    transition: all var(--transition-fast);
}

.switcher-icon span:nth-child(1) {
    width: 100%;
}

.switcher-icon span:nth-child(2) {
    width: 75%;
}

.switcher-icon span:nth-child(3) {
    width: 50%;
}

.layout-dropdown-btn:hover .switcher-icon span {
    background: var(--accent-blue-dark);
    transform: translateX(2px);
}

.layout-name {
    white-space: nowrap;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    flex: 1;
    text-align: left;
}

.layout-dropdown-btn:hover .layout-name {
    color: var(--text-primary);
}

/* Responsive adjustments for layout switcher */
@media (max-width: 768px) {
    .layout-switcher {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .layout-dropdown-btn {
        padding: var(--spacing-xs);
        min-width: 150px;
    }
    
    .layout-name {
        font-size: 0.75rem;
    }
    
    .option-name {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .layout-dropdown-btn {
        min-width: 120px;
    }
    
    .layout-name {
        display: none;
    }
    
    .dropdown-arrow {
        margin-left: auto;
    }
}

/* Focus and Accessibility */
*:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --accent-blue: #0066cc;
    }
}