/* ============================================
   Global Design System — Deezer Payment Tracker
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --purple: #8B5CF6;
    --purple-light: #a78bfa;
    --purple-dark: #6d28d9;
    --pink: #EC4899;
    --pink-dark: #db2777;
    --green: #10b981;
    --green-dark: #059669;
    --red: #ef4444;
    --red-dark: #dc2626;
    --yellow: #f59e0b;
    --yellow-dark: #d97706;
    --blue: #3b82f6;
    --indigo: #6366f1;

    --bg-dark: #0a0a14;
    --bg-card: #12121f;
    --bg-card2: #1a1a2e;
    --bg-card3: #22223a;
    --border: rgba(255, 255, 255, 0.07);
    --border-purple: rgba(139, 92, 246, 0.3);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #475569;

    --sidebar-width: 260px;
    --topbar-height: 70px;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-purple: 0 4px 24px rgba(139, 92, 246, 0.25);

    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ============ Badges ============ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-neutral {
    background: rgba(148, 163, 184, 0.1);
    color: #94a3b8;
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.badge-purple {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

/* ============ Alerts ============ */
.alert {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    animation: slideDown 0.3s ease;
}

.alert-icon {
    font-size: 16px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

.alert-info {
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #60a5fa;
}

/* ============ Buttons ============ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    background: linear-gradient(135deg, var(--purple), var(--pink));
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary:hover {
    opacity: 0.88;
    transform: translateY(-1px);
    box-shadow: var(--shadow-purple);
}

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

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    background: var(--bg-card3);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-secondary:hover {
    border-color: var(--border-purple);
    color: var(--purple-light);
}

.btn-success-full {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    background: var(--green);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-success-full:hover {
    background: var(--green-dark);
}

.btn-danger-full {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    background: var(--red);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-danger-full:hover {
    background: var(--red-dark);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-sm.btn-success {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.btn-sm.btn-success:hover {
    background: var(--green);
    color: #fff;
}

.btn-sm.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.4);
}

.btn-sm.btn-danger:hover {
    background: var(--red);
    color: #fff;
}

.btn-sm.btn-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.btn-sm.btn-warning:hover {
    background: var(--yellow);
    color: #000;
}

.btn-icon-danger {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
    opacity: 0.6;
    transition: var(--transition);
}

.btn-icon-danger:hover {
    opacity: 1;
    transform: scale(1.2);
}

/* ============ Forms ============ */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.hint {
    font-weight: 400;
    color: var(--text-muted);
    font-size: 12px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    font-size: 16px;
    pointer-events: none;
    z-index: 1;
    opacity: 0.7;
}

.form-input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    background: var(--bg-card3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

textarea.form-input {
    padding: 12px 16px;
    resize: vertical;
}

select.form-input {
    cursor: pointer;
}

.form-input:focus {
    border-color: var(--purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

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

.toggle-password {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
    opacity: 0.6;
    transition: var(--transition);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-section-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

/* Password strength */
.password-strength {
    margin-top: 8px;
}

.strength-bar {
    height: 4px;
    background: var(--bg-card3);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 4px;
}

.strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s ease, background 0.3s ease;
}

/* ============ Modal ============ */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

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

.modal-card {
    background: var(--bg-card2);
    border: 1px solid var(--border-purple);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
    animation: scaleIn 0.25s ease;
}

.modal-card.modal-large {
    max-width: 600px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 700;
}

.modal-close {
    background: var(--bg-card3);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--red);
    border-color: var(--red);
}

.modal-body {
    padding: 24px;
}

.modal-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 20px;
    flex-wrap: wrap;
}

/* ============ Spinner ============ */
.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ============ Helper classes ============ */
.text-green {
    color: #34d399;
}

.text-red {
    color: #f87171;
}

.na {
    color: var(--text-muted);
}

/* ============ Year select ============ */
.year-select {
    background: var(--bg-card3);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 13px;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
}

.year-select:hover {
    border-color: var(--border-purple);
}

/* ============ Empty state ============ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-state p {
    margin-bottom: 24px;
}

/* ============ Animations ============ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-10px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}