/* CSS Variables for Theme System */
:root {
    /* Light Theme (Default) */
    --bg-primary: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f8f9fa;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border: #e0e0e0;
    --primary: #FF6B6B;
    --secondary: #FF8E53;
    --gradient: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f0f0f;
    --bg-card: #1a1a1a;
    --bg-input: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border: #333333;
    --primary: #FF6B6B;
    --secondary: #FF8E53;
    --gradient: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--text-primary);
    padding: 10px;
    border-radius: 50%;
    transition: all 0.3s;
}

.theme-toggle:hover {
    background: rgba(255, 107, 107, 0.1);
    transform: rotate(180deg);
}

/* Menu Bar */
.menu-bar {
    background: var(--bg-card);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background 0.3s ease;
}

.menu-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.menu-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.menu-logo i {
    font-size: 32px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.menu-logo span {
    font-size: 24px;
    font-weight: bold;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.menu-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.menu-links {
    display: flex;
    gap: 25px;
    list-style: none;
}

.menu-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    padding: 5px 0;
}

.menu-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s;
}

.menu-links a:hover::after {
    width: 100%;
}

.menu-links a:hover {
    color: var(--primary);
}

.menu-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.menu-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.menu-btn-primary {
    background: var(--gradient);
    color: white;
}

.menu-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}

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

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

/* Responsive Menu */
@media (max-width: 768px) {
    .menu-container {
        flex-direction: column;
        gap: 15px;
    }

    .menu-nav {
        flex-direction: column;
        width: 100%;
    }

    .menu-links {
        flex-direction: column;
        width: 100%;
        gap: 15px;
    }

    .menu-actions {
        width: 100%;
        justify-content: center;
    }
}

/* Activity List */
.activity-list {
    list-style: none;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item:hover {
    background: rgba(255, 107, 107, 0.05);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-content h4 {
    color: var(--text-primary);
    font-size: 15px;
    margin: 0 0 5px 0;
}

.activity-content p {
    color: var(--text-secondary);
    font-size: 13px;
    margin: 0;
}

.activity-time {
    color: var(--text-secondary);
    font-size: 13px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Inputs */
input, select, textarea {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 2px solid var(--border);
    transition: all 0.3s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}