/* 
 * Premium Resume Style System 
 * Design inspired by Igloo, Stripe, Apple
 */

:root {
    /* Color Palette - HSL for easy theming */
    --hue: 220;
    --sat: 15%;
    
    /* Light Mode */
    --bg-body: hsl(var(--hue), var(--sat), 98%);
    --bg-surface: hsla(0, 0%, 100%, 0.7);
    --bg-surface-solid: hsl(0, 0%, 100%);
    --text-main: hsl(var(--hue), var(--sat), 10%);
    --text-muted: hsl(var(--hue), var(--sat), 40%);
    --border: hsl(var(--hue), var(--sat), 90%);
    --primary: hsl(210, 100%, 50%);
    --primary-glow: hsla(210, 100%, 50%, 0.15);
    
    /* Dimensions */
    --header-height: 70px;
    --toolbar-height: 60px;
    --max-width: 1000px;
    
    /* Effects */
    --shadow-sm: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.05), 0 8px 10px -6px rgb(0 0 0 / 0.05);
    --glass-blur: blur(12px);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-full: 9999px;
    
    /* Transitions */
    --trans-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --trans-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-body: hsl(var(--hue), var(--sat), 8%);
        --bg-surface: hsla(var(--hue), var(--sat), 12%, 0.7);
        --bg-surface-solid: hsl(var(--hue), var(--sat), 12%);
        --text-main: hsl(var(--hue), var(--sat), 95%);
        --text-muted: hsl(var(--hue), var(--sat), 60%);
        --border: hsl(var(--hue), var(--sat), 20%);
        --shadow-sm: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    }
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Glass Header */
.glass-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.logo-icon {
    background: var(--text-main);
    color: var(--bg-body);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.9em;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    background: var(--bg-surface-solid);
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 6px 12px;
    cursor: pointer;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--trans-fast);
}

.lang-btn:hover { color: var(--text-main); }
.lang-btn.active {
    background: var(--text-main);
    color: var(--bg-body);
    box-shadow: var(--shadow-sm);
}

/* Toolbar */
.toolbar-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    width: auto;
    max-width: 90vw;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 8px;
}

.tool-btn {
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-main);
    transition: var(--trans-fast);
}

.tool-btn:hover {
    background: var(--border);
    transform: translateY(-1px);
}

.tool-btn:active {
    transform: scale(0.95);
}

.tool-btn.primary-action {
    background: var(--text-main);
    color: var(--bg-body);
    width: auto;
    padding: 0 16px;
    gap: 8px;
    border-radius: 20px;
}

.tool-btn.primary-action:hover {
    background: var(--text-main);
    opacity: 0.9;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-text {
    font-weight: 500;
    font-size: 0.9rem;
}

.page-info, #zoom-level {
    font-variant-numeric: tabular-nums;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    min-width: 40px;
    text-align: center;
}

/* PDF Area */
.pdf-viewport {
    flex: 1;
    margin-top: var(--header-height);
    margin-bottom: 90px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 24px;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    /* Custom scrollbar for container */
    scrollbar-width: thin;
    scrollbar-color: var(--text-muted) transparent;
}

#pdf-wrapper {
    width: 100%;
    height: 100%;
}

canvas {
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--border);
    border-radius: 4px;
    max-width: 100%;
    height: auto !important;
    transition: var(--trans-smooth);
    opacity: 0;
    animation: fadeIn 0.6s forwards;
    background-color: var(--bg-surface-solid);
}

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

/* Loader */
.loader-container {
    position: fixed;
    inset: 0;
    background: var(--bg-body);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    transition: opacity 0.4s;
}

.loader-container.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--text-main);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Footer */
.footer {
    text-align: center;
    padding: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.6;
    display: none; /* Often distracting in this layout */
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-hide { display: none; }
    
    .toolbar-container {
        width: 90%;
        bottom: 16px;
        padding: 6px 12px;
        justify-content: space-between;
    }

    .tool-btn { width: 32px; height: 32px; }
    .tool-btn.primary-action { padding: 0 12px; }
    
    .glass-header { padding: 0 16px; }
    .pdf-viewport { padding: 16px; }
}