/* 
 * Bier-Zähler Design System
 * Modern, glassmorphic, responsive, and tailored HSL color schemes.
 */

/* ================= ROOT VARIABLES & RESET ================= */
:root {
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Core HSL Colors */
    --bg-base: hsl(222, 25%, 7%);
    --bg-card: hsla(222, 25%, 12%, 0.65);
    --bg-card-hover: hsla(222, 25%, 16%, 0.8);
    
    --border-color: hsla(222, 20%, 30%, 0.25);
    --border-color-hover: hsla(38, 95%, 55%, 0.4);
    
    /* Typography Colors */
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 75%);
    --text-muted: hsl(215, 12%, 55%);
    
    /* Semantic Colors */
    --clr-primary: hsl(38, 95%, 55%);      /* Warm Amber / Gold */
    --clr-primary-hover: hsl(38, 95%, 45%);
    --clr-accent: hsl(200, 95%, 50%);       /* Cool Cyan / Blue */
    --clr-accent-hover: hsl(200, 95%, 42%);
    --clr-success: hsl(142, 70%, 45%);      /* Emerald Green */
    --clr-danger: hsl(346, 80%, 55%);       /* Ruby Red */
    
    /* Effects */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --glow-gold: 0 0 20px hsla(38, 95%, 55%, 0.15);
    --glow-gold-hover: 0 0 25px hsla(38, 95%, 55%, 0.3);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.5;
}

/* ================= BACKGROUND DECORATIONS ================= */
.bg-decor {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.4;
}

.deco-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, hsla(38, 95%, 50%, 0.15) 0%, transparent 70%);
}

.deco-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, hsla(200, 95%, 50%, 0.12) 0%, transparent 70%);
}

/* ================= LAYOUT CONTAINER ================= */
.app-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* ================= PAGE ROUTING STATE ================= */
.page {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.page.active {
    display: block;
}

.hidden {
    display: none !important;
}

/* ================= GLASS PANEL COMPONENT ================= */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-panel:hover {
    border-color: hsla(222, 20%, 40%, 0.35);
}

/* ================= BUTTONS ================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-primary {
    background-color: var(--clr-primary);
    color: hsl(222, 25%, 7%);
}

.btn-primary:hover {
    background-color: var(--clr-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px hsla(38, 95%, 55%, 0.3);
}

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

.btn-accent:hover {
    background-color: var(--clr-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px hsla(200, 95%, 50%, 0.3);
}

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

.btn-outline:hover {
    background-color: hsla(222, 20%, 20%, 0.5);
    border-color: var(--text-secondary);
}

.btn-danger {
    background-color: transparent;
    border-color: hsla(346, 80%, 55%, 0.3);
    color: var(--clr-danger);
}

.btn-danger:hover {
    background-color: var(--clr-danger);
    color: white;
    border-color: transparent;
}

/* ================= FORM ELEMENTS ================= */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: hsla(222, 25%, 5%, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 2px hsla(38, 95%, 55%, 0.15);
    background-color: hsla(222, 25%, 5%, 0.8);
}

/* ================= GUEST / AUTH VIEW ================= */
#page-guest {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    margin: auto;
}

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

.auth-logo {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.5rem;
    animation: bounce 2s infinite ease-in-out;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.auth-tabs {
    display: flex;
    background-color: hsla(222, 25%, 5%, 0.4);
    padding: 4px;
    border-radius: var(--radius-sm);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.6rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.tab-btn.active {
    background-color: hsla(222, 25%, 15%, 0.8);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

/* ================= APP HEADER ================= */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    margin-bottom: 2rem;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-emoji {
    font-size: 2rem;
}

.logo-text h2 {
    font-size: 1.3rem;
    line-height: 1.2;
    font-weight: 700;
}

.association-name {
    font-size: 0.75rem;
    color: var(--clr-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-greeting {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.user-greeting strong {
    color: var(--text-primary);
}

/* ================= DASHBOARD GRID ================= */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 2rem;
    margin-bottom: 2rem;
}

.dashboard-main h3,
.stats-section h3,
.history-section h3,
.admin-section h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.section-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Booking Drink Cards Grid */
.booking-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1.25rem;
}

.drink-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.drink-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, hsla(38, 95%, 55%, 0.1) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.drink-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color-hover);
    box-shadow: var(--glow-gold-hover);
    background-color: var(--bg-card-hover);
}

.drink-card:hover::before {
    opacity: 1;
}

.drink-card:active {
    transform: translateY(-1px);
    box-shadow: var(--glow-gold);
}

.drink-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.75rem;
    transition: transform var(--transition-normal);
}

.drink-card:hover .drink-icon {
    transform: scale(1.15) rotate(5deg);
}

.drink-name {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.drink-price {
    color: var(--clr-primary);
    font-weight: 700;
    font-size: 1.2rem;
}

/* Sidebar Info Blocks */
.dashboard-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stats-card {
    box-shadow: var(--glow-gold);
}

.gradient-border {
    position: relative;
}

.gradient-border::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-md);
    padding: 1.5px;
    background: linear-gradient(135deg, var(--clr-primary), transparent 60%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

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

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
    margin-top: 0.25rem;
}

.highlight-gold .stat-value {
    color: var(--clr-primary);
    text-shadow: 0 0 10px hsla(38, 95%, 55%, 0.2);
}

.stat-icon {
    font-size: 2.2rem;
    opacity: 0.85;
}

.stats-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
}

.info-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.export-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.export-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

/* ================= MONTHLY CHARTS ================= */
.stats-section {
    margin-bottom: 2rem;
}

.charts-container {
    padding: 1rem 0;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 1.5rem;
    min-height: 200px;
    padding-top: 2rem;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.chart-bar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    min-width: 60px;
    max-width: 100px;
    animation: scaleUp 0.5s ease-out;
}

.chart-bar-container {
    width: 100%;
    height: 150px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    position: relative;
}

.chart-bar-value {
    position: absolute;
    top: -24px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--clr-primary);
}

.chart-bar {
    width: 70%;
    background: linear-gradient(to top, var(--clr-primary-hover), var(--clr-primary));
    border-radius: 6px 6px 0 0;
    min-height: 4px;
    transition: height 0.6s cubic-bezier(0.17, 0.67, 0.83, 0.67), opacity var(--transition-fast);
    box-shadow: 0 4px 10px hsla(38, 95%, 55%, 0.1);
    position: relative;
    cursor: pointer;
}

.chart-bar:hover {
    opacity: 0.9;
    box-shadow: 0 0 15px hsla(38, 95%, 55%, 0.3);
}

.chart-bar-tooltip {
    position: absolute;
    bottom: calc(100% + 30px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background-color: hsl(222, 25%, 3%);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    z-index: 10;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.chart-bar:hover .chart-bar-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.chart-label {
    margin-top: 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
}

.no-data {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
    width: 100%;
    padding: 2rem 0;
}

/* ================= TABLES ================= */
.history-section,
.admin-section {
    margin-bottom: 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.table-container {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 0.9rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

th {
    color: var(--text-secondary);
    font-weight: 600;
    background-color: hsla(222, 25%, 5%, 0.3);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: hsla(222, 25%, 15%, 0.15);
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.bold {
    font-weight: 700;
}

/* Status colors in tables */
.role-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.role-badge.admin {
    background-color: hsla(200, 95%, 50%, 0.15);
    color: var(--clr-accent);
    border: 1px solid hsla(200, 95%, 50%, 0.2);
}

.role-badge.user {
    background-color: hsla(222, 12%, 55%, 0.15);
    color: var(--text-secondary);
    border: 1px solid hsla(222, 12%, 55%, 0.2);
}

/* ================= ADMIN INTERFACE ================= */
.admin-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.admin-tab-btn {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.admin-tab-btn:hover {
    color: var(--text-primary);
}

.admin-tab-btn.active {
    color: var(--clr-primary);
    border-bottom-color: var(--clr-primary);
}

.admin-section {
    display: none;
}

.admin-section.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

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

.admin-table td {
    padding: 0.75rem 1.25rem;
}

/* Config & Beverages List Editor */
.system-settings-box {
    background-color: hsla(222, 25%, 5%, 0.3);
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.system-settings-box h4,
.beverages-editor-box h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.form-checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.form-checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 4px;
    cursor: pointer;
}

.label-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.beverages-editor-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.beverage-editor-row {
    display: grid;
    grid-template-columns: 80px 1fr 120px 40px;
    gap: 0.75rem;
    align-items: center;
    background-color: hsla(222, 25%, 5%, 0.2);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    animation: fadeIn var(--transition-fast);
}

.btn-remove-row {
    background: transparent;
    border: none;
    color: var(--clr-danger);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-remove-row:hover {
    transform: scale(1.15);
}

.btn-add-beverage {
    margin-bottom: 1.5rem;
}

.form-actions {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    display: flex;
    justify-content: flex-end;
}

/* ================= MODAL DIALOGS ================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 100;
    padding: 1rem;
    animation: fadeIn var(--transition-fast);
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    width: 100%;
    max-width: 460px;
    box-shadow: var(--shadow-lg);
    border-color: hsla(222, 20%, 40%, 0.4);
    animation: scaleUp 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.8rem;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* ================= TOAST NOTIFICATION SYSTEM ================= */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 320px;
    width: 100%;
}

.toast {
    background-color: hsl(222, 25%, 3%);
    border-left: 4px solid var(--clr-primary);
    color: var(--text-primary);
    padding: 0.9rem 1.25rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    box-shadow: var(--shadow-lg);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideInRight 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    transition: all var(--transition-normal);
}

.toast.toast-success {
    border-left-color: var(--clr-success);
}

.toast.toast-error {
    border-left-color: var(--clr-danger);
}

.toast.toast-fadeout {
    opacity: 0;
    transform: translateX(120%);
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    margin-left: 0.75rem;
    line-height: 1;
}

.toast-close:hover {
    color: var(--text-primary);
}

/* ================= UTILITY CLASSES ================= */
.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--clr-primary);
    animation: spin 0.8s linear infinite;
    margin: 2rem auto;
}

/* ================= KEYFRAMES ================= */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleUp {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
    from { transform: translateX(120%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

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

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ================= RESPONSIVE LAYOUTS ================= */
@media (max-width: 900px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-sidebar {
        order: -1; /* Display status block above booking block on mobile */
    }
}

@media (max-width: 600px) {
    .app-container {
        padding: 1rem 0.75rem;
    }
    
    .app-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding: 1rem;
    }
    
    .header-user {
        justify-content: space-between;
    }
    
    .glass-panel {
        padding: 1.25rem;
    }
    
    .booking-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
        gap: 0.75rem;
    }
    
    .drink-card {
        padding: 1rem;
    }
    
    .drink-icon {
        font-size: 2.2rem;
    }
    
    .drink-name {
        font-size: 0.95rem;
    }
    
    .drink-price {
        font-size: 1.05rem;
    }
    
    th, td {
        padding: 0.6rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .admin-section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .beverage-editor-row {
        grid-template-columns: 60px 1fr 90px 30px;
        gap: 0.4rem;
        padding: 0.4rem;
    }
}