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

:root {
    --primary-color: #4F46E5;
    --primary-hover: #4338CA;
    --danger-color: #EF4444;
    --danger-hover: #DC2626;
    --success-color: #10B981;
    --font-family: 'Inter', sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Navbar (Modern & Floating/Sticky) */
.navbar {
    position: sticky;
    top: 0;
    height: 64px;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
    z-index: 50;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand a {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.025em;
}

.navbar-links {
    display: flex;
    gap: 1.25rem;
}

.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
    background-color: var(--hover-bg);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.theme-toggle, .user-btn, .mobile-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: background-color 0.2s;
}

.theme-toggle:hover, .user-btn:hover, .mobile-toggle:hover {
    background-color: var(--hover-bg);
}

.user-dropdown {
    position: relative;
}

.user-avatar {
    width: 28px;
    height: 28px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.user-name {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px var(--shadow-color);
    min-width: 180px;
    overflow: hidden;
    animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.dropdown-item {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
}

.dropdown-item:hover {
    background: var(--hover-bg);
}

.text-danger {
    color: var(--danger-color) !important;
}

.mobile-menu {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: 0 10px 15px -3px var(--shadow-color);
}

/* Layout */
.main-content {
    min-height: calc(100vh - 64px);
    padding: 1rem 0;
}

.main-content.no-nav {
    min-height: 100vh;
}

/* Cards (Modern & Shadowed) */
.card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px var(--shadow-color);
    padding: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--hover-bg);
}

/* Forms styling */
.form-group {
    margin-bottom: 1.25rem;
}
.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.85rem;
}
.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}
.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* Modals global overlay */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

/* Utilities */
.desktop-only { display: flex; }
.mobile-only { display: none; }

@media (max-width: 768px) {
    .desktop-only { display: none; }
    .mobile-only { display: flex; }
    .navbar-container { padding: 0 0.75rem; }
}