/* CSS Variables for Light/Dark Mode */
:root {
    /* Light Mode Colors */
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --accent-color: #3498db;
    --accent-hover: #2980b9;
    --danger-color: #e74c3c;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --border-color: #e1e5eb;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.12);
    --grid-bg: #3498db;
    --vertical-bg: #2ecc71;
    --theme-toggle-bg: #2c3e50;
    --theme-toggle-text: #ffffff;
    --date-info-bg: #e8f4fc;
    --date-info-text: #2c3e50;
}

[data-theme="dark"] {
    /* Dark Mode Colors */
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --text-primary: #e6e6e6;
    --text-secondary: #b0b0b0;
    --accent-color: #4d96ff;
    --accent-hover: #3a7bd5;
    --danger-color: #ff6b6b;
    --success-color: #4cd964;
    --warning-color: #ffa502;
    --border-color: #2d3748;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.35);
    --grid-bg: #3d5af1;
    --vertical-bg: #00b894;
    --theme-toggle-bg: #4d96ff;
    --theme-toggle-text: #1a1a2e;
    --date-info-bg: #1e3a5f;
    --date-info-text: #e6e6e6;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
}

#themeToggle {
    background-color: var(--theme-toggle-bg);
    color: var(--theme-toggle-text);
    border: none;
    border-radius: 25px;
    padding: 10px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

#themeToggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

h1 {
    color: var(--accent-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.date-info {
    background-color: var(--date-info-bg);
    border-radius: 10px;
    padding: 20px;
    margin: 20px auto;
    max-width: 800px;
    box-shadow: var(--shadow);
}

.current-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--date-info-text);
    margin-bottom: 10px;
}

.current-date i {
    color: var(--accent-color);
}

.description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Container and Sections */
.container {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.section {
    flex: 1;
    min-width: 350px;
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
}

.section-title {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Grid Links - Square Form */
.grid-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 15px;
}

.grid-link {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
    background-color: var(--grid-bg);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.grid-link:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.grid-link.highlight {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.3);
}

.grid-link::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.3s;
}

.grid-link:hover::after {
    opacity: 1;
}

/* Vertical Links */
.vertical-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.vertical-link {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--vertical-bg);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    cursor: pointer;
    gap: 10px;
}

.vertical-link:hover {
    background-color: var(--success-color);
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

.vertical-link.highlight {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.3);
}

.vertical-link i {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Hidden State */
.hidden {
    display: none !important;
}

/* Stats Section */
.stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.stat-box {
    background-color: var(--bg-secondary);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    min-width: 180px;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--accent-color);
}

.stat-box h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.stat-box p {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-color);
}

/* Controls */
.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.control-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

#resetBtn {
    background-color: var(--warning-color);
    color: white;
}

#showAllBtn {
    background-color: var(--success-color);
    color: white;
}

#hideAllBtn {
    background-color: var(--danger-color);
    color: white;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.footer-note {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .grid-links {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    }
}

@media (max-width: 992px) {
    .container {
        flex-direction: column;
    }
    
    .section {
        min-width: 100%;
    }
    
    .grid-links {
        grid-template-columns: repeat(auto-fill, minmax(85px, 1fr));
    }
}

@media (max-width: 768px) {
    .grid-links {
        grid-template-columns: repeat(auto-fill, minmax(75px, 1fr));
    }
    
    .stats {
        flex-direction: column;
        align-items: center;
    }
    
    .stat-box {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 576px) {
    .grid-links {
        grid-template-columns: repeat(auto-fill, minmax(65px, 1fr));
    }
    
    .controls {
        flex-direction: column;
        align-items: center;
    }
    
    .control-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .theme-toggle {
        position: static;
        display: flex;
        justify-content: flex-end;
        margin-bottom: 20px;
    }
    
    .date-info {
        padding: 15px;
    }
    
    .current-date {
        font-size: 1.1rem;
    }
}


/* Add to your existing style.css */

/* Vertical links - fix for no blink space */
.vertical-link {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--vertical-bg);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    cursor: pointer;
    gap: 10px;
    width: 100%;
    border: none;
    text-align: left;
    opacity: 1;
    transform: scale(1);
    max-height: 1000px;
    overflow: hidden;
}

.vertical-link:hover {
    background-color: var(--success-color);
    transform: translateX(5px) scale(1);
    box-shadow: var(--shadow-hover);
}

.vertical-link.highlight {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.3);
}

/* When hidden, smoothly collapse */
.vertical-link.hidden {
    opacity: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin: 0;
    transform: scale(0.8);
    pointer-events: none;
    transition: all 0.3s ease;
}

/* Grid links - fix for no blink space */
.grid-link {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
    background-color: var(--grid-bg);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    position: relative;
    overflow: hidden;
    opacity: 1;
    transform: scale(1);
}

.grid-link:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px) scale(1);
    box-shadow: var(--shadow-hover);
}

.grid-link.highlight {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.3);
}

/* When hidden, smoothly collapse */
.grid-link.hidden {
    opacity: 0;
    transform: scale(0.5);
    max-height: 0;
    padding: 0;
    margin: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}

/* Ensure the container maintains layout */
.grid-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 15px;
    transition: all 0.3s ease;
}

.vertical-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: all 0.3s ease;
}

/* Link text styling */
.link-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.vertical-link i {
    font-size: 0.9rem;
    opacity: 0.9;
    flex-shrink: 0;
}

.vertical-link .fa-microsoft {
    color: #ffffff;
}

[data-theme="dark"] .vertical-link .fa-microsoft {
    color: #00a4ef;
}

/* Top Rectangle Links */
.top-rectangle-links {
    margin: 20px auto 30px;
    max-width: 1200px;
    width: 100%;
}

.rectangle-link-container {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.rectangle-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 20px 30px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-size: 1.3rem;
    font-weight: 600;
    transition: all 0.3s ease;
    min-width: 250px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.rectangle-link:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    text-decoration: none;
    color: white;
}

.rectangle-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.rectangle-link:hover::before {
    left: 100%;
}

.rectangle-link i {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.rectangle-link:hover i {
    transform: scale(1.2);
}

.rectangle-text {
    white-space: nowrap;
}

/* Different colors for each rectangle link */
.rectangle-link-1 {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.rectangle-link-2 {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
}

/* Dark mode adjustments for rectangle links */
[data-theme="dark"] .rectangle-link-1 {
    background: linear-gradient(135deg, #4d96ff, #3a7bd5);
}

[data-theme="dark"] .rectangle-link-2 {
    background: linear-gradient(135deg, #00b894, #00a085);
}

/* Responsive design for rectangle links */
@media (max-width: 768px) {
    .rectangle-link-container {
        flex-direction: column;
        align-items: center;
    }
    
    .rectangle-link {
        width: 100%;
        max-width: 400px;
        min-width: auto;
        padding: 18px 25px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .rectangle-link {
        padding: 15px 20px;
        font-size: 1.1rem;
        gap: 10px;
    }
    
    .rectangle-link i {
        font-size: 1.3rem;
    }
}