/* Top navigation bar and side menu */

/* Top Nav (Used in register/auth pages mostly) */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
    z-index: 1000;
}

.top-nav-content {
    max-width: 1080px;
    margin: 0 auto;
    height: 100%;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Base Logo Style */
.logo {
    font-family: "Plus Jakarta Sans", "DM Sans", system-ui, sans-serif;
    font-size: 21px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text);
    background: none;
    -webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo::before {
    content: "⚡";
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    color: #ffffff;
    font-size: 18px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
    -webkit-text-fill-color: #ffffff;
}

/* Hamburger Button */
.hamburger-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    transition: all 0.2s ease;
}

.hamburger-btn span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.2s ease;
}

.hamburger-btn:hover span {
    background: var(--primary);
    width: 28px;
}

/* Sidebar Overlay */
.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 1100;
}

.menu-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Glassmorphism Sidebar */
.side-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    height: 100dvh;
    background: var(--surface); 
    border-left: 1px solid var(--border);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.2);
    
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1200;
    display: flex;
    flex-direction: column;
}

.side-menu.active {
    transform: translateX(0);
}

/* Sidebar Header */
.side-menu-header {
    height: 80px;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--border);
}

/* Close Button */
.close-menu-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: none;
    background: var(--surface-highlight);
    color: var(--muted);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.close-menu-btn:hover {
    background: var(--primary);
    color: #ffffff;
}

/* Content Container - Wrapper for pinned footer layout */
.side-menu-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
}

/* Scrollable Nav Area */
.menu-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 24px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* Nav Links */
.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.menu-link svg, .menu-link .theme-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: inherit;
    opacity: 0.8;
}

.menu-link:hover {
    background: var(--surface-highlight);
    color: var(--text);
}

.menu-link.active {
    background: rgba(124, 58, 237, 0.1); 
    color: #a78bfa;
    border: 1px solid rgba(124, 58, 237, 0.15);
}

[data-theme="light"] .menu-link.active {
    background: rgba(124, 58, 237, 0.1);
    color: #a78bfa;
}

/* Footer Section - Pinned to bottom */
.menu-footer {
    margin-top: 0;
    padding: 24px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 20px));
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex-shrink: 0;
    background: var(--surface);
    z-index: 10;
}

/* Modern Theme Toggle Button */
#themeToggleBtn {
    justify-content: center;
    text-align: center;
    font-weight: 700;
    border: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 12px 16px;
}

/* Dark Mode Active: Button allows switch to Light (White BG, Dark Text) */
[data-theme="dark"] #themeToggleBtn {
    background-color: #ffffff;
    color: #0f172a;
}
[data-theme="dark"] #themeToggleBtn:hover {
    background-color: #f1f5f9;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.15);
}

/* Light Mode Active: Button allows switch to Dark (Dark BG, White Text) */
[data-theme="light"] #themeToggleBtn {
    background-color: #0f172a;
    color: #ffffff;
}
[data-theme="light"] #themeToggleBtn:hover {
    background-color: #1e293b;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
}

#themeToggleBtn .theme-text {
    font-size: 14px;
    letter-spacing: 0.02em;
}

/* Credits Card in Footer */
.credits-card {
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.credits-icon-wrapper {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(124, 58, 237, 0.15);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.credits-info {
    display: flex;
    flex-direction: column;
}

.credits-count {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
}

.credits-label {
    font-size: 10px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.menu-action-btn {
    width: 100%;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
}

.menu-action-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(124, 58, 237, 0.4);
}

.back-link {
    color: #a1a1aa;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s ease;
}

.back-link:hover {
    color: #ffffff;
}