/* Main Styles - Dark Ferrari Theme */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    background-color: #0A0A0A;
    color: #FFFFFF;
    min-height: 100vh;
    line-height: 1.6;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   HEADER - Dark Navy with Gold Border
   ============================================ */
.header {
    background: linear-gradient(135deg, #0D1B2A 0%, #1B2838 100%) !important;
    padding: 0.75rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 200;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    border-bottom: 2px solid #D4AF37;
}

.header.hidden {
    display: none;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    text-decoration: none;
}

.header-brand {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header-brand .brand-calc {
    color: #00B4D8;
}

.header-brand .brand-your {
    color: #FFFFFF;
}

.header-brand .brand-gpa {
    color: #D4AF37;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.gpa-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #D4AF37 0%, #B8962E 100%);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-weight: 700;
    color: #000000;
    box-shadow: 0 4px 14px 0 rgba(212, 175, 55, 0.4);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    flex: 1;
    padding: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #FFFFFF;
}

a {
    color: #00B4D8;
    text-decoration: none;
    transition: color 150ms ease;
}

a:hover {
    color: #90E0EF;
}

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: #00B4D8;
    font-weight: 500;
}

.breadcrumb-separator {
    color: #6B7280;
}

.breadcrumb-current {
    color: #B0B0B0;
}

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    margin-bottom: 0;
    color: #FFFFFF;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

/* ============================================
   EMPTY STATES
   ============================================ */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: #B0B0B0;
}

.empty-state .empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state h2 {
    color: #FFFFFF;
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: #B0B0B0;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

.text-muted {
    color: #6B7280;
}

.grade-a {
    color: #10B981 !important;
}

.grade-b {
    color: #00B4D8 !important;
}

.grade-c {
    color: #D4AF37 !important;
}

.grade-d {
    color: #F97316 !important;
}

.grade-f {
    color: #EF4444 !important;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: 0.75rem 1rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #121212;
}

::-webkit-scrollbar-thumb {
    background: #4B5563;
    border-radius: 9999px;
}

::selection {
    background: #00B4D8;
    color: #FFFFFF;
}