/* Professional Student Sidebar Styles - Black Gold Theme */
.student-dashboard,
.student-courses,
.password-change-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #ffffff;
}

.sidebar {
    background: linear-gradient(180deg, #000000 0%, #1a1a1a 100%);
    min-height: 100vh;
    padding: 0;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.8);
    position: relative;
    overflow: hidden;
    border-right: 3px solid #FFD700;
}

.sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="sidebar-grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.05"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.05"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.05"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.05"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23sidebar-grain)"/></svg>');
    opacity: 0.3;
}

.sidebar-header {
    background: linear-gradient(135deg, #FFD700 0%, #B8860B 100%);
    padding: 2rem 1.5rem;
    color: #000000;
    border-bottom: 3px solid #FFD700;
    position: relative;
    z-index: 2;
}

.sidebar-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="header-grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23header-grain)"/></svg>');
    opacity: 0.2;
}

.sidebar-title {
    margin: 0;
    font-weight: 700;
    font-size: 1.3rem;
    color: white;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    position: relative;
    z-index: 2;
}


.sidebar-nav {
    padding: 1rem 0;
    position: relative;
    z-index: 2;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: #b0b0b0;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin: 0.25rem 1rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s;
}

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

.nav-link:hover {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(255, 215, 0, 0.05) 100%);
    color: #FFD700;
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
}

.sidebar .nav-link.active,
.sidebar .nav-link.active:focus,
.sidebar .nav-link.active:hover {
    background: linear-gradient(135deg, #FFD700 0%, #B8860B 100%) !important;
    color: #000000 !important;
    border: none !important;
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.5) !important;
    text-decoration: none !important;
    transform: translateX(8px) !important;
}

.nav-link i {
    margin-right: 1rem;
    width: 24px;
    text-align: center;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.nav-link:hover i {
    transform: scale(1.1);
}

/* Override Bootstrap nav-link styles specifically for sidebar */
.sidebar .nav-link {
    display: flex !important;
    align-items: center !important;
    padding: 0.875rem 1rem !important;
    color: white !important;
    text-decoration: none !important;
    transition: all 0.3s ease !important;
    margin: 0.125rem 0.5rem !important;
    border-radius: 6px !important;
    font-weight: 500 !important;
    font-size: 0.9rem !important;
    background: transparent !important;
    border: none !important;
}

.sidebar .nav-link:hover {
    background: #495057 !important;
    color: white !important;
    text-decoration: none !important;
}

.sidebar .nav-link:focus {
    background: #495057 !important;
    color: white !important;
    text-decoration: none !important;
    outline: none !important;
    box-shadow: none !important;
}

.main-content {
    padding: 2.5rem;
    background: transparent;
    position: relative;
}

.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="content-grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="0.5" fill="white" opacity="0.03"/><circle cx="75" cy="75" r="0.5" fill="white" opacity="0.03"/></pattern></defs><rect width="100" height="100" fill="url(%23content-grain)"/></svg>');
    opacity: 0.5;
    pointer-events: none;
}

.dashboard-header h1,
.courses-header h1,
.password-change-header h1 {
    color: #FFD700;
    font-weight: 700;
    margin-bottom: 0.75rem;
    font-size: 2.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    position: relative;
    z-index: 2;
}

.dashboard-header p,
.courses-header p,
.password-change-header p {
    color: #e0e0e0;
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
    line-height: 1.6;
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .sidebar {
        min-height: auto;
    }
    
    .main-content {
        padding: 1rem;
    }
}

/* My Program Dropdown Styles - Professional Design */
.courses-dropdown-menu {
    min-width: 360px !important;
    max-width: 420px !important;
    max-height: 70vh !important;
    overflow-y: auto !important;
    border: none !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12) !important;
    border-radius: 16px !important;
    padding: 0 !important;
    margin-top: 12px !important;
    background: #ffffff !important;
    position: absolute !important;
    z-index: 1050 !important;
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-10px) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.courses-dropdown-menu::-webkit-scrollbar {
    width: 6px;
}

.courses-dropdown-menu::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.courses-dropdown-menu::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.courses-dropdown-menu::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Program Header Section - Simplified */
.program-header {
    background: #f8f9fa !important;
    color: #495057 !important;
    padding: 0.75rem 1rem !important;
    border-radius: 0 !important;
    position: relative !important;
    overflow: hidden !important;
    margin: 0 !important;
    border: none !important;
    border-bottom: 1px solid #e9ecef !important;
}

.program-item {
    display: flex;
    align-items: center;
    padding: 0;
    background: transparent;
    border: none;
    position: relative;
    z-index: 1;
}

.program-icon {
    display: none;
}

.program-info {
    flex: 1;
}

.program-code {
    font-weight: 600;
    color: #495057;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    margin-bottom: 0.2rem;
}

.program-name {
    color: #6c757d;
    font-size: 0.8rem;
    font-weight: 400;
    line-height: 1.3;
}

/* Subjects Header - Simplified */
.subjects-header {
    background: #e9ecef;
    color: #495057;
    padding: 0.75rem 1rem;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
}

.subjects-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
}

/* Subject Items */
.subject-item {
    display: flex !important;
    align-items: flex-start !important;
    padding: 0.875rem 1.25rem !important;
    border: none !important;
    border-bottom: 1px solid #f8f9fa !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative !important;
    background: white !important;
    margin: 0 !important;
    text-decoration: none !important;
    color: inherit !important;
}

.subject-item:last-child {
    border-bottom: none;
    border-radius: 0 0 16px 16px;
}

.subject-item:hover {
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.1);
}

.subject-item:hover::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
    border-radius: 0 2px 2px 0;
}

.subject-icon {
    width: 36px !important;
    height: 36px !important;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    border-radius: 8px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin-right: 1rem !important;
    color: white !important;
    font-size: 0.9rem !important;
    flex-shrink: 0 !important;
    box-shadow: 0 3px 8px rgba(102, 126, 234, 0.25) !important;
    transition: all 0.3s ease !important;
}

.subject-item:hover .subject-icon {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.subject-info {
    flex: 1;
    min-width: 0;
}

.subject-code {
    font-weight: 700 !important;
    color: #2d3436 !important;
    font-size: 0.85rem !important;
    display: block !important;
    margin-bottom: 0.2rem !important;
    letter-spacing: 0.5px !important;
    line-height: 1.3 !important;
}

.subject-title {
    color: #636e72 !important;
    font-size: 0.75rem !important;
    font-weight: 500 !important;
    line-height: 1.3 !important;
    margin-bottom: 0.4rem !important;
    display: block !important;
}

.lecturer-info {
    color: #0984e3 !important;
    font-size: 0.7rem !important;
    font-weight: 600 !important;
    display: flex !important;
    align-items: center !important;
    margin-bottom: 0.2rem !important;
}

.lecturer-info i {
    margin-right: 0.4rem !important;
    font-size: 0.65rem !important;
}

.class-info {
    color: #00b894 !important;
    font-size: 0.65rem !important;
    font-weight: 600 !important;
    display: inline-flex !important;
    align-items: center !important;
    background: rgba(0, 184, 148, 0.1) !important;
    padding: 0.2rem 0.4rem !important;
    border-radius: 4px !important;
}

.class-info i {
    margin-right: 0.3rem !important;
    font-size: 0.6rem !important;
}

/* Dropdown Headers */
.dropdown-header {
    padding: 0.75rem 1.5rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: #2d3436;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.dropdown-header i {
    margin-right: 0.5rem;
    color: #6c5ce7;
}

/* View All Button */
.view-all-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 0 0 16px 16px;
    transition: all 0.3s ease;
    text-align: center;
    width: 100%;
}

.view-all-btn:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #667eea 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
    color: white;
}

.view-all-btn i {
    margin-right: 0.5rem;
}

/* My Program Button Enhancement */
.courses-dropdown-btn {
    background: linear-gradient(135deg, #20c997 0%, #17a2b8 100%);
    border: none;
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(32, 201, 151, 0.3);
    position: relative;
    overflow: hidden;
}

.courses-dropdown-btn::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: left 0.5s;
}

.courses-dropdown-btn:hover::before {
    left: 100%;
}

.courses-dropdown-btn:hover {
    background: linear-gradient(135deg, #17a2b8 0%, #20c997 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(32, 201, 151, 0.4);
    color: white;
}

.courses-dropdown-btn:focus {
    box-shadow: 0 0 0 3px rgba(32, 201, 151, 0.3);
    color: white;
}

.courses-dropdown-btn i {
    margin-right: 0.5rem;
    font-size: 0.9rem;
}

/* Student Profile Button Enhancement */
.student-profile-btn {
    background: white;
    border: 2px solid #e9ecef;
    color: #495057;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.student-profile-btn:hover {
    background: #f8f9fa;
    border-color: #007bff;
    color: #007bff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.2);
}

.student-profile-btn:focus {
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
}

.profile-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.profile-pic-nav,
.profile-pic-placeholder-nav {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.student-profile-btn:hover .profile-pic-nav,
.student-profile-btn:hover .profile-pic-placeholder-nav {
    border-color: #007bff;
    transform: scale(1.05);
}

.profile-pic-placeholder-nav {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.9rem;
}

/* Bootstrap Override - Force our styles */
.dropdown-menu.courses-dropdown-menu {
    min-width: 360px !important;
    max-width: 420px !important;
    max-height: 70vh !important;
    overflow-y: auto !important;
    border: none !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12) !important;
    border-radius: 16px !important;
    padding: 0 !important;
    margin-top: 12px !important;
    background: #ffffff !important;
    position: absolute !important;
    z-index: 1050 !important;
    display: none !important;
    top: 100% !important;
    left: 0 !important;
    right: auto !important;
    transform: none !important;
}

.dropdown-menu.courses-dropdown-menu.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

/* Override Bootstrap dropdown item styles */
.dropdown-menu.courses-dropdown-menu .dropdown-item {
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    background: transparent !important;
    color: inherit !important;
    text-decoration: none !important;
    white-space: normal !important;
}

.dropdown-menu.courses-dropdown-menu .dropdown-item:hover,
.dropdown-menu.courses-dropdown-menu .dropdown-item:focus {
    background: transparent !important;
    color: inherit !important;
}

/* Custom Student Navbar - No Bootstrap Dependencies */
.student-navbar {
    position: relative !important;
    overflow: visible !important;
    display: flex !important;
    align-items: center !important;
    padding: 1rem 0 !important;
    background: #ffffff !important;
    border-bottom: 1px solid #e9ecef !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1) !important;
    z-index: 1000 !important;
}

.student-navbar .container-fluid {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
    padding: 0 1rem !important;
}

.student-navbar .navbar-nav-left {
    display: flex !important;
    align-items: center !important;
}

.student-navbar .navbar-nav-right {
    display: flex !important;
    align-items: center !important;
    gap: 1rem !important;
}

.student-navbar .navbar-brand {
    display: flex !important;
    align-items: center !important;
    text-decoration: none !important;
    color: #333 !important;
    font-weight: bold !important;
}

.student-navbar .navbar-brand img {
    margin-right: 0.5rem !important;
}

.student-navbar .brand-text {
    display: flex !important;
    flex-direction: column !important;
    line-height: 1.2 !important;
}

.student-navbar .brand-text strong {
    font-size: 1.1rem !important;
    color: #333 !important;
}

.student-navbar .brand-text small {
    font-size: 0.8rem !important;
    color: #666 !important;
    font-weight: normal !important;
}

/* Prevent Bootstrap navbar conflicts */
.courses-dropdown-right {
    position: relative !important;
}

.courses-dropdown-right .dropdown-menu {
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    right: auto !important;
    transform: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .courses-dropdown-menu {
        min-width: 300px !important;
        max-width: 90vw !important;
        max-height: 50vh !important;
    }
    
    .program-header,
    .subjects-header {
        padding: 0.6rem 0.8rem !important;
    }
    
    .subject-item {
        padding: 0.5rem 0.8rem !important;
    }
    
    .program-icon {
        width: 30px !important;
        height: 30px !important;
        font-size: 0.9rem !important;
    }
    
    .subject-icon {
        width: 28px !important;
        height: 28px !important;
        font-size: 0.7rem !important;
    }
    
    .courses-dropdown-btn {
        padding: 0.625rem 1rem;
        font-size: 0.85rem;
    }
    
    .student-profile-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .profile-info {
        gap: 0.5rem;
    }
    
    .profile-pic-nav,
    .profile-pic-placeholder-nav {
        width: 28px;
        height: 28px;
    }
}