/* ============================================================
   KMG Lyon - App Styles (mobile-first PWA)
   ============================================================ */

:root {
    --kmg-dark: #1a1a2e;
    --kmg-darker: #16213e;
    --kmg-accent: #f47b20;
    --kmg-accent-hover: #d96a10;
    --kmg-light: #f5f5f5;
    --kmg-success: #2ecc71;
    --kmg-warning: #f39c12;
}

body {
    background-color: var(--kmg-dark);
    color: var(--kmg-light);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    margin: 0;
    padding-bottom: 80px;
}

/* Hide auth-dependent elements until auth check completes */
body:not(.auth-ready) [data-auth] {
    display: none !important;
}

/* Navbar */
.navbar-kmg {
    background: var(--kmg-darker) !important;
    border-bottom: 2px solid var(--kmg-accent);
    padding: 0.5rem 1rem;
}

.navbar-kmg .navbar-brand {
    color: var(--kmg-accent) !important;
    font-weight: 900;
    font-size: 1.4rem;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-kmg .navbar-brand img {
    height: 36px;
    width: auto;
    background: #ffffff;
    padding: 4px 8px;
    border-radius: 8px;
}

.navbar-kmg .nav-link {
    color: var(--kmg-light) !important;
    font-weight: 500;
    transition: color 0.2s;
}

.navbar-kmg .nav-link:hover,
.navbar-kmg .nav-link.active {
    color: var(--kmg-accent) !important;
}

.navbar-kmg .navbar-toggler {
    border-color: var(--kmg-accent);
}

.navbar-kmg .navbar-toggler-icon {
    filter: invert(1);
}

/* Cards */
.card-kmg {
    background: var(--kmg-darker);
    border: 1px solid rgba(244, 123, 32, 0.2);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card-kmg:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(244, 123, 32, 0.15);
}

/* Buttons */
.btn-kmg {
    background: var(--kmg-accent);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 12px 28px;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s;
}

.btn-kmg:hover {
    background: var(--kmg-accent-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(244, 123, 32, 0.3);
}

.btn-kmg:focus,
.btn-kmg:focus-visible,
.btn-kmg:active,
.btn-kmg:first-child:active {
    background: var(--kmg-accent-hover);
    color: white;
    border-color: transparent;
    box-shadow: 0 0 0 3px rgba(244, 123, 32, 0.3);
}

.btn-kmg:disabled {
    opacity: 0.6;
    transform: none;
}

.btn-kmg-outline {
    background: transparent;
    color: var(--kmg-accent);
    border: 2px solid var(--kmg-accent);
    border-radius: 12px;
    padding: 10px 26px;
    font-weight: 700;
    transition: all 0.2s;
}

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

.btn-kmg-outline:focus,
.btn-kmg-outline:focus-visible,
.btn-kmg-outline:active,
.btn-kmg-outline:first-child:active {
    background: transparent;
    color: var(--kmg-accent);
    border-color: var(--kmg-accent);
    box-shadow: 0 0 0 3px rgba(244, 123, 32, 0.3);
}

/* Forms */
.form-kmg .form-control,
.form-kmg .form-select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--kmg-light);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 1rem;
}

.form-kmg .form-control:focus,
.form-kmg .form-select:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--kmg-accent);
    box-shadow: 0 0 0 3px rgba(244, 123, 32, 0.2);
    color: var(--kmg-light);
}

.form-kmg .form-control::placeholder {
    color: rgba(245, 245, 245, 0.4);
}

.form-kmg .form-label {
    color: rgba(245, 245, 245, 0.8);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.form-kmg .form-select option {
    background: var(--kmg-darker);
    color: var(--kmg-light);
}

/* Auth pages */
.auth-container {
    max-width: 420px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.auth-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo img {
    max-width: 180px;
    height: auto;
    margin-bottom: 0.5rem;
    background: #ffffff;
    padding: 12px 16px;
    border-radius: 16px;
}

.auth-logo h1 {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--kmg-accent);
    margin: 0;
}

.auth-logo p {
    color: rgba(245, 245, 245, 0.6);
    margin: 0.5rem 0 0;
}

/* QR Code */
.qr-container {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    display: inline-block;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

#qr-reader {
    border-radius: 12px;
    overflow: hidden;
}

#qr-reader video {
    border-radius: 12px;
}

/* Scanner overlay */
.scanner-frame {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

/* Badges */
.badge-location {
    font-size: 0.75rem;
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-arnas { background: #3498db; color: white; }
.badge-lyon { background: var(--kmg-accent); color: white; }
.badge-millery { background: var(--kmg-success); color: white; }
.badge-valence { background: #9b59b6; color: white; }

/* Stats cards */
.stat-card {
    text-align: center;
    padding: 1.5rem 1rem;
}

.stat-card-highlight {
    border: 2px solid var(--kmg-accent);
}

.stat-card .stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--kmg-accent);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: rgba(245, 245, 245, 0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

/* History list */
.history-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    border-left: 4px solid var(--kmg-accent);
    transition: background 0.2s;
}

/* Session rows (compact) */
.session-row {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 0.6rem 0.8rem;
    margin-bottom: 0.4rem;
    border-left: 3px solid var(--kmg-accent);
    transition: background 0.2s;
}

.session-row:hover {
    background: rgba(255, 255, 255, 0.06);
}

.session-date-col {
    width: 40px;
    flex-shrink: 0;
    line-height: 1.1;
}

.session-day {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--kmg-accent);
}

.session-month {
    font-size: 0.65rem;
    text-transform: uppercase;
    color: rgba(245, 245, 245, 0.5);
    font-weight: 600;
}

/* Email verification badges */
.badge-verified {
    font-size: 0.7rem;
    color: var(--kmg-success);
    font-weight: 600;
}

.badge-unverified {
    font-size: 0.7rem;
    color: var(--kmg-warning);
    font-weight: 600;
}

/* Password toggle */
.password-wrapper {
    position: relative;
}

.password-wrapper .form-control {
    padding-right: 2.5rem;
}

.password-wrapper .toggle-password {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    opacity: 0.4;
    user-select: none;
    line-height: 0;
    display: flex;
    align-items: center;
    transition: opacity 0.2s;
    color: var(--kmg-light);
}

.password-wrapper .toggle-password:hover {
    opacity: 1;
}

/* Student avatar */
.student-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--kmg-accent);
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    overflow: hidden;
}

.student-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Avatar upload (Account page) */
.avatar-upload-wrapper {
    position: relative;
    display: inline-block;
}

.avatar-preview {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: var(--kmg-accent);
    color: white;
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    overflow: hidden;
}

.avatar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-edit-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--kmg-darker);
    border: 2px solid var(--kmg-accent);
    color: var(--kmg-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.avatar-edit-btn:hover {
    background: var(--kmg-accent);
    color: white;
}

.history-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

/* Alerts */
.alert-kmg-success {
    background: rgba(46, 204, 113, 0.15);
    border: 1px solid rgba(46, 204, 113, 0.3);
    color: var(--kmg-success);
    border-radius: 12px;
    padding: 1rem 1.5rem;
}

.alert-kmg-error {
    background: rgba(244, 123, 32, 0.15);
    border: 1px solid rgba(244, 123, 32, 0.3);
    color: var(--kmg-accent);
    border-radius: 12px;
    padding: 1rem 1.5rem;
}

.alert-kmg-info {
    background: rgba(52, 152, 219, 0.15);
    border: 1px solid rgba(52, 152, 219, 0.3);
    color: #5dade2;
    border-radius: 12px;
    padding: 1rem 1.5rem;
}

/* Bottom nav (mobile) */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--kmg-darker);
    border-top: 2px solid rgba(244, 123, 32, 0.3);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    z-index: 1050;
}

.bottom-nav a {
    color: rgba(245, 245, 245, 0.5);
    text-decoration: none;
    text-align: center;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 8px;
    transition: color 0.2s;
    flex: 1;
}

.bottom-nav a .nav-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 2px;
}

.bottom-nav a.active,
.bottom-nav a:hover {
    color: var(--kmg-accent);
}

/* Loading spinner */
.spinner-kmg {
    border: 3px solid rgba(244, 123, 32, 0.2);
    border-top-color: var(--kmg-accent);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Utility */
.text-kmg { color: var(--kmg-accent) !important; }
.text-muted-kmg { color: rgba(245, 245, 245, 0.5) !important; }

.page-title {
    font-weight: 900;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Hide desktop nav on small screens, show bottom nav */
@media (max-width: 576px) {
    .navbar-kmg .nav-desktop { display: none !important; }
    .container { padding-left: 1rem; padding-right: 1rem; }
}

@media (min-width: 577px) {
    .bottom-nav { display: none; }
}

/* Bottom navigation mobile */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--kmg-darker);
    border-top: 2px solid var(--kmg-accent);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    z-index: 1000;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: rgba(245, 245, 245, 0.6);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.5rem;
    transition: color 0.2s;
    flex: 1;
}

.bottom-nav a.active,
.bottom-nav a:hover {
    color: var(--kmg-accent);
}

.bottom-nav .nav-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 0.2rem;
}

/* Nav SVG icons */
.nav-svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    vertical-align: -3px;
    margin-right: 2px;
    visibility: visible;
}

.bottom-nav .nav-svg {
    width: 22px;
    height: 22px;
    margin-right: 0;
}

/* Smooth transitions */
.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}