/* ═══════════════════════════════════════════
   VIRDAP — MAIN STYLESHEET
   ═══════════════════════════════════════════ */

/* ── VARIABLES ──────────────────────────── */
:root {
    --primary:       #6C63FF;
    --primary-dark:  #5A52D5;
    --primary-light: #EEF0FF;
    --secondary:     #FF6584;
    --success:       #2ECC71;
    --warning:       #F39C12;
    --danger:        #E74C3C;
    --dark:          #1A1A2E;
    --dark-2:        #16213E;
    --gray-1:        #F8F9FA;
    --gray-2:        #E9ECEF;
    --gray-3:        #CED4DA;
    --gray-4:        #6C757D;
    --gray-5:        #343A40;
    --white:         #FFFFFF;
    --text:          #2D3748;
    --text-light:    #718096;
    --border:        #E2E8F0;
    --shadow:        0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg:     0 10px 40px rgba(0,0,0,0.15);
    --radius:        12px;
    --radius-sm:     8px;
    --radius-lg:     20px;
    --font:          'Inter', sans-serif;
    --font-display:  'Playfair Display', serif;
    --transition:    all 0.3s ease;
    --navbar-h:      70px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--white);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; }

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img { max-width: 100%; display: block; }

ul { list-style: none; }

/* ── TYPOGRAPHY ─────────────────────────── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.8rem); }

/* ── CONTAINER ──────────────────────────── */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ═══════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    height: var(--navbar-h);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 24px;
}

/* Logo */
.nav-logo { display: flex; align-items: center; gap: 10px; }
.logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-display);
}

/* Search */
.nav-search {
    flex: 1;
    max-width: 480px;
    display: flex;
    align-items: center;
    background: var(--gray-1);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 8px 16px;
    gap: 8px;
    transition: var(--transition);
}

.nav-search:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
    background: var(--white);
}

.nav-search input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    color: var(--text);
    outline: none;
    font-family: var(--font);
}

.nav-search button {
    background: none;
    border: none;
    color: var(--gray-4);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.nav-search button:hover { color: var(--primary); }

/* Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.nav-link {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.nav-link:hover { background: var(--gray-1); color: var(--primary); }

.nav-link-publish {
    background: var(--primary-light);
    color: var(--primary);
}

.nav-link-publish:hover { background: var(--primary); color: var(--white); }

/* Register Button */
.btn-nav-register {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white) !important;
    padding: 9px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.btn-nav-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 99, 255, 0.4);
}

/* Dropdown */
.nav-dropdown { position: relative; }

.nav-dropdown-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 6px 12px 6px 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.nav-dropdown-btn:hover { border-color: var(--primary); }

.nav-avatar {
    width: 34px; height: 34px;
    border-radius: 50%;
    object-fit: cover;
}

.nav-avatar-placeholder {
    width: 34px; height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    padding-top: 8px;
    z-index: 100;
}

.nav-dropdown-menu-inner {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    min-width: 220px;
    box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-menu.show { display: block; }

.nav-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--text);
    transition: var(--transition);
}

.nav-dropdown-menu a:hover { background: var(--gray-1); color: var(--primary); }

.nav-dropdown-menu hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 6px 0;
}

.dropdown-header {
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dropdown-header strong { font-size: 0.95rem; }

.logout-link { color: var(--danger) !important; }
.logout-link:hover { background: #FFF5F5 !important; }

/* Role Badge */
.role-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.role-author  { background: #EEF0FF; color: var(--primary); }
.role-reader  { background: #E8F8F0; color: var(--success); }
.role-admin   { background: #FFF3E0; color: var(--warning); }

/* Mobile */
.nav-mobile-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--text);
    margin-left: auto;
}

.nav-mobile-menu {
    display: none;
    flex-direction: column;
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
}

.nav-mobile-menu a {
    padding: 12px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.nav-mobile-menu a:hover { background: var(--gray-1); color: var(--primary); }

/* ═══════════════════════════════════════════
   MESSAGES / ALERTS
   ═══════════════════════════════════════════ */
.messages-container {
    position: fixed;
    top: calc(var(--navbar-h) + 16px);
    right: 16px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 380px;
}

.alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0);   opacity: 1; }
}

.alert-success { background: #D4EDDA; color: #155724; border-left: 4px solid var(--success); }
.alert-error   { background: #F8D7DA; color: #721C24; border-left: 4px solid var(--danger);  }
.alert-warning { background: #FFF3CD; color: #856404; border-left: 4px solid var(--warning); }
.alert-info    { background: #D1ECF1; color: #0C5460; border-left: 4px solid #17A2B8;        }

.alert-close {
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0.6;
    font-size: 0.8rem;
    transition: var(--transition);
    color: inherit;
}
.alert-close:hover { opacity: 1; }

/* ═══════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: var(--font);
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(108,99,255,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108,99,255,0.4);
    color: var(--white);
}

.btn-secondary {
    background: var(--gray-1);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--gray-2); }

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

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

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

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

.btn-lg { padding: 16px 32px; font-size: 1.05rem; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ═══════════════════════════════════════════
   FORMS
   ═══════════════════════════════════════════ */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
}

.form-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-5);
}

.form-control {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: var(--font);
    color: var(--text);
    background: var(--white);
    transition: var(--transition);
    outline: none;
    width: 100%;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-control::placeholder { color: var(--gray-3); }

textarea.form-control { resize: vertical; min-height: 120px; }

.form-hint {
    font-size: 0.8rem;
    color: var(--text-light);
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
}

/* ═══════════════════════════════════════════
   BOOK CARDS
   ═══════════════════════════════════════════ */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 24px;
}

.book-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: pointer;
}

.book-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.book-card-cover {
    width: 100%;
    aspect-ratio: 2/3;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-light), var(--gray-2));
}

.book-card-body {
    padding: 14px;
}

.book-card-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-card-author {
    font-size: 0.82rem;
    color: var(--text-light);
    margin-bottom: 8px;
}

.book-card-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}

.book-card-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.82rem;
    color: var(--warning);
    margin-top: 6px;
}

/* ═══════════════════════════════════════════
   SECTION HEADERS
   ═══════════════════════════════════════════ */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.section-title {
    font-size: 1.4rem;
    font-weight: 700;
}

.section-link {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 500;
}

.section-link:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    margin-top: auto;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 60px 24px 40px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.footer-brand p { font-size: 0.9rem; line-height: 1.7; }

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-social a:hover { background: var(--primary); color: white; }

.footer-col h4 {
    color: var(--white);
    font-size: 0.95rem;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col a {
    display: block;
    font-size: 0.88rem;
    padding: 5px 0;
    transition: var(--transition);
}

.footer-col a:hover { color: var(--white); padding-left: 4px; }

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

/* ═══════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════ */
.text-center  { text-align: center; }
.text-primary { color: var(--primary); }
.text-muted   { color: var(--text-light); }
.text-danger  { color: var(--danger); }
.text-success { color: var(--success); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }

.py-3 { padding-top: 24px; padding-bottom: 24px; }
.py-5 { padding-top: 48px; padding-bottom: 48px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success { background: #D4EDDA; color: #155724; }
.badge-warning { background: #FFF3CD; color: #856404; }
.badge-danger  { background: #F8D7DA; color: #721C24; }
.badge-primary { background: var(--primary-light); color: var(--primary); }

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 768px) {
    .nav-search  { display: none; }
    .nav-links   { display: none; }
    .nav-mobile-btn { display: block; }

    .nav-mobile-menu.active { display: flex; }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .books-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .footer-container { grid-template-columns: 1fr; }
    .books-grid { grid-template-columns: repeat(2, 1fr); }
}