/* =============================================================================
   Memory Box — Senior-Friendly Theme
   ============================================================================= */

:root {
    /* Warm, approachable palette */
    --color-primary: #2D5F8A;
    --color-primary-light: #3A7AB5;
    --color-primary-dark: #1E4160;
    --color-accent: #E8913A;
    --color-accent-light: #F0A85C;
    --color-success: #3D8B5E;
    --color-danger: #C0392B;
    --color-danger-light: #E74C3C;
    --color-warning: #D4A017;

    --color-bg: #FAF8F5;
    --color-bg-card: #FFFFFF;
    --color-bg-nav: #2D5F8A;
    --color-bg-footer: #F0EDE8;
    --color-bg-input: #FFFFFF;
    --color-bg-muted: #F5F2EE;

    --color-text: #2C2C2C;
    --color-text-light: #5A5A5A;
    --color-text-inverse: #FFFFFF;
    --color-text-muted: #888888;
    --color-border: #D5D0C8;
    --color-border-focus: #2D5F8A;

    --font-body: "Georgia", "Times New Roman", serif;
    --font-heading: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "Consolas", monospace;

    --text-base: 1.2rem;
    --text-lg: 1.35rem;
    --text-xl: 1.6rem;
    --text-2xl: 2rem;
    --text-3xl: 2.5rem;
    --text-sm: 1.05rem;

    --radius: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    --max-width: 900px;
    --transition: 0.2s ease;
}

/* === Reset & Base === */

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

html {
    font-size: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--color-text);
    background-color: var(--color-bg);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

/* === Typography === */

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary-dark);
    margin-top: 0;
}

h1 { font-size: var(--text-3xl); margin-bottom: var(--spacing-md); }
h2 { font-size: var(--text-2xl); margin-bottom: var(--spacing-md); }
h3 { font-size: var(--text-xl);  margin-bottom: var(--spacing-sm); }

p {
    margin: 0 0 var(--spacing-md);
    max-width: 65ch;
}

a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 1.5px;
    text-underline-offset: 3px;
    transition: color var(--transition);
}

a:hover, a:focus {
    color: var(--color-primary-dark);
}

/* === Layout === */

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* === Navigation === */

.navbar {
    background: var(--color-bg-nav);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-inverse);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.navbar-brand:hover {
    color: var(--color-text-inverse);
    opacity: 0.9;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-nav a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: var(--text-base);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius);
    transition: background var(--transition), color var(--transition);
}

.navbar-nav a:hover,
.navbar-nav a:focus {
    background: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
}

.navbar-nav a.active {
    background: rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
}

/* === Cards === */

.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-bg-muted);
}

.card-header h2, .card-header h3 {
    margin-bottom: 0;
}

/* === Forms === */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form-hint {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: 2px;
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-text);
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(45, 95, 138, 0.15);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input.is-error {
    border-color: var(--color-danger);
}

.form-error {
    color: var(--color-danger);
    font-size: var(--text-sm);
    margin-top: var(--spacing-xs);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* === Buttons === */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.85rem 1.75rem;
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition),
                transform var(--transition), box-shadow var(--transition);
    line-height: 1.4;
    min-height: 52px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    color: var(--color-text-inverse);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn-accent {
    background: var(--color-accent);
    color: #FFFFFF;
}

.btn-accent:hover {
    background: var(--color-accent-light);
    color: #FFFFFF;
}

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

.btn-danger:hover {
    background: var(--color-danger-light);
    color: #FFFFFF;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
    min-height: 40px;
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: var(--text-lg);
    min-height: 60px;
}

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

/* === Flash Messages / Alerts === */

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-lg);
    font-size: var(--text-base);
    border-left: 5px solid;
}

.alert-success {
    background: #E8F5E9;
    border-color: var(--color-success);
    color: #1B5E20;
}

.alert-error {
    background: #FDECEA;
    border-color: var(--color-danger);
    color: #8B1A10;
}

.alert-warning {
    background: #FFF8E1;
    border-color: var(--color-warning);
    color: #6D5A00;
}

.alert-info {
    background: #E3F2FD;
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

/* === Tables === */

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-base);
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

th {
    font-family: var(--font-heading);
    font-weight: 600;
    background: var(--color-bg-muted);
    color: var(--color-text);
    white-space: nowrap;
}

tr:hover td {
    background: var(--color-bg-muted);
}

/* === Badges === */

.badge {
    display: inline-block;
    padding: 0.2em 0.7em;
    font-family: var(--font-heading);
    font-size: 0.85em;
    font-weight: 600;
    border-radius: 999px;
    line-height: 1.4;
}

.badge-active {
    background: #E8F5E9;
    color: var(--color-success);
}

.badge-inactive {
    background: #FDECEA;
    color: var(--color-danger);
}

.badge-admin {
    background: #E3F2FD;
    color: var(--color-primary);
}

.badge-free {
    background: var(--color-bg-muted);
    color: var(--color-text-light);
}

/* === Stats Grid === */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--color-primary);
}

.stat-value {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

/* === Footer === */

.footer {
    background: var(--color-bg-footer);
    padding: var(--spacing-lg) 0;
    margin-top: auto;
    border-top: 1px solid var(--color-border);
}

.footer p {
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--text-sm);
    margin: 0;
}

/* === Auth Pages (centered card layout) === */

.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
    padding: var(--spacing-lg) var(--spacing-md);
}

.auth-card {
    width: 100%;
    max-width: 520px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
}

.auth-card h1 {
    text-align: center;
    margin-bottom: var(--spacing-xs);
}

.auth-card .auth-subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-lg);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: var(--text-base);
    color: var(--color-text-light);
}

/* === Utility Classes === */

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* === Audio Recorder === */

.recorder-wrap {
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.btn-record {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--color-danger);
    background: #FFFFFF;
    color: var(--color-danger);
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition), color var(--transition),
                transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 20px rgba(192, 57, 43, 0.15);
}

.btn-record:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 28px rgba(192, 57, 43, 0.25);
}

.btn-record:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
}

.btn-record:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-record-hero {
    width: 180px;
    height: 180px;
    font-size: var(--text-xl);
    border-width: 5px;
    box-shadow: 0 6px 30px rgba(192, 57, 43, 0.2);
}

.btn-record-hero:hover {
    box-shadow: 0 8px 40px rgba(192, 57, 43, 0.3);
}

.btn-record.state-recording {
    background: var(--color-danger);
    color: #FFFFFF;
    animation: pulse-record 1.5s ease-in-out infinite;
}

.btn-record.state-done,
.btn-record.state-error {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

@keyframes pulse-record {
    0%, 100% { box-shadow: 0 0 0 0 rgba(192, 57, 43, 0.4); }
    50%      { box-shadow: 0 0 0 18px rgba(192, 57, 43, 0); }
}

.recorder-timer {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-top: var(--spacing-md);
}

.recorder-status-text {
    font-size: var(--text-base);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
    min-height: 1.75em;
}

.recorder-progress {
    margin-top: var(--spacing-md);
    background: var(--color-bg-muted);
    border-radius: 999px;
    height: 28px;
    overflow: hidden;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.recorder-progress-bar {
    height: 100%;
    background: var(--color-primary);
    border-radius: 999px;
    text-align: center;
    color: #FFFFFF;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 28px;
    width: 0%;
    transition: width 0.3s ease;
}

.recorder-or-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.recorder-or-divider::before,
.recorder-or-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* === Recordings List === */

.recording-item {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-sm);
    background: var(--color-bg-card);
}

.recording-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.recording-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--text-base);
}

.recording-status {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-style: italic;
}

.recording-transcript {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
    font-size: var(--text-base);
    line-height: 1.8;
    white-space: pre-wrap;
    color: var(--color-text);
}

.recording-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    margin-top: var(--spacing-sm);
}

/* === Responsive === */

@media (max-width: 600px) {
    :root {
        --text-base: 1.1rem;
        --text-3xl: 2rem;
        --text-2xl: 1.65rem;
    }

    .auth-card {
        padding: var(--spacing-lg);
    }

    .btn-lg {
        width: 100%;
    }

    .navbar .container {
        flex-direction: column;
        text-align: center;
    }

    .navbar-nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}