/* assets/css/app.css - MoneyHub Official Design System (Blue Finance + System Theme) */

:root {
    /* =========================
       BRAND
    ========================= */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-active: #1e40af;
    --color-primary-soft: #eff6ff;
    --color-primary-soft-hover: #dbeafe;

    /* =========================
       BACKGROUND
    ========================= */
    --color-bg: #f8fafc;
    --color-bg-secondary: #f1f5f9;
    --color-surface: #ffffff;
    --color-surface-hover: #f8fafc;
    --color-surface-active: #f1f5f9;

    /* =========================
       TEXT
    ========================= */
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    --color-text-placeholder: #94a3b8;
    --color-text-disabled: #cbd5e1;

    /* =========================
       BORDER
    ========================= */
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-border-strong: #cbd5e1;

    /* =========================
       FINANCE
    ========================= */
    --color-income: #059669;
    --color-income-soft: #ecfdf5;
    --color-income-border: #a7f3d0;

    --color-expense: #e11d48;
    --color-expense-soft: #fff1f2;
    --color-expense-border: #fecdd3;

    --color-transfer: #2563eb;
    --color-transfer-soft: #eff6ff;

    /* =========================
       STATUS
    ========================= */
    --color-success: #059669;
    --color-success-soft: #ecfdf5;

    --color-warning: #d97706;
    --color-warning-soft: #fffbeb;

    --color-danger: #e11d48;
    --color-danger-soft: #fff1f2;

    --color-info: #2563eb;
    --color-info-soft: #eff6ff;

    /* =========================
       SIDEBAR
    ========================= */
    --sidebar-bg: #ffffff;
    --sidebar-border: #e2e8f0;
    --sidebar-text: #64748b;
    --sidebar-text-hover: #0f172a;
    --sidebar-item-hover: #f1f5f9;
    --sidebar-item-active: #eff6ff;
    --sidebar-item-active-text: #2563eb;

    /* =========================
       INPUT
    ========================= */
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-border-hover: #94a3b8;
    --input-border-focus: #2563eb;
    --input-placeholder: #94a3b8;

    /* =========================
       BUTTON
    ========================= */
    --button-primary-bg: #2563eb;
    --button-primary-hover: #1d4ed8;
    --button-primary-active: #1e40af;
    --button-primary-text: #ffffff;

    --button-secondary-bg: #ffffff;
    --button-secondary-hover: #f8fafc;
    --button-secondary-border: #e2e8f0;
    --button-secondary-text: #334155;

    /* =========================
       CHART PALETTE
    ========================= */
    --chart-income: #059669;
    --chart-expense: #e11d48;
    --chart-balance: #2563eb;
    --chart-1: #2563eb;
    --chart-2: #8b5cf6;
    --chart-3: #06b6d4;
    --chart-4: #f59e0b;
    --chart-5: #059669;
    --chart-6: #e11d48;

    /* =========================
       SHADOW
    ========================= */
    --shadow-xs: 0 1px 2px rgb(15 23 42 / 0.04);
    --shadow-sm: 0 2px 6px rgb(15 23 42 / 0.05);
    --shadow-md: 0 8px 24px rgb(15 23 42 / 0.08);
    --shadow-lg: 0 16px 40px rgb(15 23 42 / 0.12);

    /* =========================
       RADIUS
    ========================= */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* =========================
       MOTION
    ========================= */
    --duration-fast: 150ms;
    --duration-normal: 220ms;
    --duration-slow: 320ms;

    --ease-standard: cubic-bezier(.2, .8, .2, 1);
    --ease-emphasized: cubic-bezier(.16, 1, .3, 1);
}

/* ==========================================
   DARK THEME (System or Explicit Override)
=========================================== */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg: #0f172a;
        --color-bg-secondary: #111c2f;
        --color-surface: #1e293b;
        --color-surface-hover: #243247;
        --color-surface-active: #334155;

        --color-text: #f8fafc;
        --color-text-secondary: #cbd5e1;
        --color-text-muted: #94a3b8;
        --color-text-placeholder: #64748b;
        --color-text-disabled: #475569;

        --color-border: #334155;
        --color-border-light: #1e293b;
        --color-border-strong: #475569;

        --color-primary: #3b82f6;
        --color-primary-hover: #60a5fa;
        --color-primary-active: #2563eb;
        --color-primary-soft: rgb(59 130 246 / 0.12);
        --color-primary-soft-hover: rgb(59 130 246 / 0.18);

        --color-income: #34d399;
        --color-income-soft: rgb(16 185 129 / 0.12);
        --color-income-border: rgb(52 211 153 / 0.25);

        --color-expense: #fb7185;
        --color-expense-soft: rgb(244 63 94 / 0.12);
        --color-expense-border: rgb(251 113 133 / 0.25);

        --color-transfer: #60a5fa;
        --color-transfer-soft: rgb(59 130 246 / 0.12);

        --color-success: #34d399;
        --color-success-soft: rgb(16 185 129 / 0.12);

        --color-warning: #fbbf24;
        --color-warning-soft: rgb(245 158 11 / 0.12);

        --color-danger: #fb7185;
        --color-danger-soft: rgb(244 63 94 / 0.12);

        --color-info: #60a5fa;
        --color-info-soft: rgb(59 130 246 / 0.12);

        --sidebar-bg: #111827;
        --sidebar-border: #1f2937;
        --sidebar-text: #94a3b8;
        --sidebar-text-hover: #f8fafc;
        --sidebar-item-hover: #1e293b;
        --sidebar-item-active: rgb(59 130 246 / 0.12);
        --sidebar-item-active-text: #60a5fa;

        --input-bg: #172235;
        --input-border: #334155;
        --input-border-hover: #475569;
        --input-border-focus: #3b82f6;
        --input-placeholder: #64748b;

        --button-primary-bg: #3b82f6;
        --button-primary-hover: #2563eb;
        --button-primary-active: #1d4ed8;
        --button-primary-text: #ffffff;

        --button-secondary-bg: #1e293b;
        --button-secondary-hover: #243247;
        --button-secondary-border: #334155;
        --button-secondary-text: #e2e8f0;

        --chart-income: #34d399;
        --chart-expense: #fb7185;
        --chart-balance: #3b82f6;

        --shadow-xs: 0 1px 2px rgb(0 0 0 / 0.15);
        --shadow-sm: 0 2px 6px rgb(0 0 0 / 0.20);
        --shadow-md: 0 8px 24px rgb(0 0 0 / 0.25);
        --shadow-lg: 0 16px 40px rgb(0 0 0 / 0.35);
    }
}

[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-bg-secondary: #111c2f;
    --color-surface: #1e293b;
    --color-surface-hover: #243247;
    --color-surface-active: #334155;

    --color-text: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-text-placeholder: #64748b;
    --color-text-disabled: #475569;

    --color-border: #334155;
    --color-border-light: #1e293b;
    --color-border-strong: #475569;

    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-primary-active: #2563eb;
    --color-primary-soft: rgb(59 130 246 / 0.12);
    --color-primary-soft-hover: rgb(59 130 246 / 0.18);

    --color-income: #34d399;
    --color-income-soft: rgb(16 185 129 / 0.12);
    --color-income-border: rgb(52 211 153 / 0.25);

    --color-expense: #fb7185;
    --color-expense-soft: rgb(244 63 94 / 0.12);
    --color-expense-border: rgb(251 113 133 / 0.25);

    --color-transfer: #60a5fa;
    --color-transfer-soft: rgb(59 130 246 / 0.12);

    --color-success: #34d399;
    --color-success-soft: rgb(16 185 129 / 0.12);

    --color-warning: #fbbf24;
    --color-warning-soft: rgb(245 158 11 / 0.12);

    --color-danger: #fb7185;
    --color-danger-soft: rgb(244 63 94 / 0.12);

    --color-info: #60a5fa;
    --color-info-soft: rgb(59 130 246 / 0.12);

    --sidebar-bg: #111827;
    --sidebar-border: #1f2937;
    --sidebar-text: #94a3b8;
    --sidebar-text-hover: #f8fafc;
    --sidebar-item-hover: #1e293b;
    --sidebar-item-active: rgb(59 130 246 / 0.12);
    --sidebar-item-active-text: #60a5fa;

    --input-bg: #172235;
    --input-border: #334155;
    --input-border-hover: #475569;
    --input-border-focus: #3b82f6;
    --input-placeholder: #64748b;

    --button-primary-bg: #3b82f6;
    --button-primary-hover: #2563eb;
    --button-primary-active: #1d4ed8;
    --button-primary-text: #ffffff;

    --button-secondary-bg: #1e293b;
    --button-secondary-hover: #243247;
    --button-secondary-border: #334155;
    --button-secondary-text: #e2e8f0;

    --chart-income: #34d399;
    --chart-expense: #fb7185;
    --chart-balance: #3b82f6;

    --shadow-xs: 0 1px 2px rgb(0 0 0 / 0.15);
    --shadow-sm: 0 2px 6px rgb(0 0 0 / 0.20);
    --shadow-md: 0 8px 24px rgb(0 0 0 / 0.25);
    --shadow-lg: 0 16px 40px rgb(0 0 0 / 0.35);
}

/* ==========================================
   BASE STYLES
=========================================== */
html {
    color-scheme: light dark;
    box-sizing: border-box;
}

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

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    -webkit-tap-highlight-color: transparent;
    transition: background-color var(--duration-normal) var(--ease-standard),
                color var(--duration-normal) var(--ease-standard);
    min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, 0.25);
    border-radius: 9999px;
    transition: background var(--duration-fast);
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 0.45);
}

/* ==========================================
   CARD SYSTEM
=========================================== */
.card, .app-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    transition: border-color var(--duration-fast) var(--ease-standard),
                box-shadow var(--duration-fast) var(--ease-standard),
                transform var(--duration-fast) var(--ease-standard);
}

.card-interactive, .app-card-interactive {
    cursor: pointer;
}
.card-interactive:hover, .app-card-interactive:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-sm);
}
.card-interactive:active, .app-card-interactive:active {
    transform: translateY(1px);
}

/* ==========================================
   HERO BALANCE CARD (The ONLY Gradient Card)
=========================================== */
.balance-card {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.balance-value {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.15;
}

@media (max-width: 639px) {
    .balance-value {
        font-size: 28px;
    }
}

/* ==========================================
   BUTTONS
=========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 16px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25rem;
    cursor: pointer;
    border: 1px solid transparent;
    user-select: none;
    white-space: nowrap;
    position: relative;
    transition: background-color var(--duration-fast) var(--ease-standard),
                box-shadow var(--duration-fast) var(--ease-standard),
                transform var(--duration-fast) var(--ease-standard);
}

.btn:active {
    transform: translateY(1px);
}

.btn:disabled, .btn[disabled] {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
    transform: none !important;
}

.btn-primary {
    background: var(--button-primary-bg);
    color: var(--button-primary-text);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
}
.btn-primary:hover {
    background: var(--button-primary-hover);
    box-shadow: var(--shadow-sm);
}
.btn-primary:active {
    background: var(--button-primary-active);
    transform: translateY(1px);
}

.btn-secondary {
    background: var(--button-secondary-bg);
    color: var(--button-secondary-text);
    border: 1px solid var(--button-secondary-border);
    border-radius: var(--radius-md);
}
.btn-secondary:hover {
    background: var(--button-secondary-hover);
}

.btn-danger {
    background: var(--color-danger);
    color: #ffffff;
    border-radius: var(--radius-md);
}
.btn-danger:hover {
    background: #be123c;
}

/* Loading Spinner on Buttons */
.btn-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    display: none;
    animation: btn-spin 0.65s linear infinite;
    flex-shrink: 0;
}

.btn.is-loading {
    cursor: wait !important;
    pointer-events: none !important;
}
.btn.is-loading .btn-content {
    opacity: 0.85;
}
.btn.is-loading .btn-spinner {
    display: inline-block;
}

@keyframes btn-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==========================================
   INPUTS
=========================================== */
.input {
    width: 100%;
    min-height: 42px;
    background: var(--input-bg);
    color: var(--color-text);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    padding: 8px 14px;
    font-size: 0.875rem;
    transition: border-color var(--duration-fast) var(--ease-standard),
                box-shadow var(--duration-fast) var(--ease-standard);
}

.input:hover {
    border-color: var(--input-border-hover);
}

.input:focus {
    outline: none;
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.12);
}

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

/* ==========================================
   SIDEBAR & NAVIGATION
=========================================== */
.sidebar {
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
}

.sidebar-item, .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--sidebar-text);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: background-color var(--duration-fast) var(--ease-standard),
                color var(--duration-fast) var(--ease-standard);
}

.sidebar-item:hover, .nav-link:hover {
    background: var(--sidebar-item-hover);
    color: var(--sidebar-text-hover);
}

.sidebar-item.active, .nav-link.active {
    background: var(--sidebar-item-active);
    color: var(--sidebar-item-active-text);
    font-weight: 600;
}

/* Mobile Navigation Bar */
.mobile-nav {
    background: var(--color-surface);
    background: color-mix(in srgb, var(--color-surface) 96%, transparent);
    border-top: 1px solid var(--color-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    height: 64px;
    box-shadow: 0 -4px 20px rgb(0 0 0 / 0.08);
}

.safe-area-pb {
    padding-bottom: max(6px, env(safe-area-inset-bottom));
}

.bottom-nav-item {
    color: var(--color-text-muted);
    transition: color var(--duration-fast) var(--ease-standard), transform var(--duration-fast);
}
.bottom-nav-item:active {
    transform: scale(0.92);
}
.bottom-nav-item.active {
    color: var(--color-primary);
    font-weight: 600;
}

/* ==========================================
   FINANCE SEMANTIC BADGES & AMOUNTS
=========================================== */
.money-income {
    color: var(--color-income);
}
.money-income-bg {
    background: var(--color-income-soft);
    color: var(--color-income);
    border: 1px solid var(--color-income-border);
}

.money-expense {
    color: var(--color-expense);
}
.money-expense-bg {
    background: var(--color-expense-soft);
    color: var(--color-expense);
    border: 1px solid var(--color-expense-border);
}

.money-transfer {
    color: var(--color-transfer);
}
.money-transfer-bg {
    background: var(--color-transfer-soft);
    color: var(--color-transfer);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

/* ==========================================
   MODALS & BOTTOM SHEETS
=========================================== */
.modal-backdrop {
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(6px);
    transition: opacity var(--duration-normal) var(--ease-emphasized);
}

@media (min-width: 640px) {
    .modal-dialog {
        animation: modalZoomIn var(--duration-normal) var(--ease-emphasized) forwards;
        transform-origin: center center;
    }
}
@keyframes modalZoomIn {
    from {
        opacity: 0;
        transform: scale(0.96) translateY(6px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@media (max-width: 639px) {
    .modal-dialog {
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        border-bottom-left-radius: 0 !important;
        border-bottom-right-radius: 0 !important;
        border-top-left-radius: 20px !important;
        border-top-right-radius: 20px !important;
        max-height: 88vh;
        overflow-y: auto;
        animation: sheetSlideUp var(--duration-slow) var(--ease-emphasized) forwards;
    }
}
@keyframes sheetSlideUp {
    from {
        opacity: 0.5;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sheet-handle {
    width: 40px;
    height: 4px;
    background-color: var(--color-border-strong);
    border-radius: 9999px;
    margin: 0 auto 16px auto;
    opacity: 0.6;
}

/* ==========================================
   TOAST NOTIFICATIONS (MoneyHub Semantic)
=========================================== */
#toast-container {
    pointer-events: none;
}
#toast-container > * {
    pointer-events: auto;
}

.toast {
    background: var(--color-surface);
    color: var(--color-text);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    animation: toast-enter var(--duration-slow) var(--ease-emphasized) forwards;
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
    overflow: hidden;
}

.toast.is-leaving {
    animation: toast-leave var(--duration-normal) var(--ease-standard) forwards;
}

.toast-success {
    background: var(--color-surface);
    border: 1px solid var(--color-income-border);
    color: var(--color-text);
}
.toast-success .toast-icon {
    color: var(--color-success);
}

.toast-error {
    background: var(--color-surface);
    border: 1px solid var(--color-expense-border);
    color: var(--color-text);
}
.toast-error .toast-icon {
    color: var(--color-danger);
}

.toast-warning {
    background: var(--color-surface);
    border: 1px solid rgba(217, 119, 6, 0.25);
    color: var(--color-text);
}
.toast-warning .toast-icon {
    color: var(--color-warning);
}

.toast-info {
    background: var(--color-surface);
    border: 1px solid rgba(37, 99, 235, 0.25);
    color: var(--color-text);
}
.toast-info .toast-icon {
    color: var(--color-info);
}

@keyframes toast-enter {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes toast-leave {
    from {
        opacity: 1;
        transform: translateY(0);
        max-height: 120px;
        margin-bottom: 8px;
    }
    to {
        opacity: 0;
        transform: translateY(-8px);
        max-height: 0;
        margin-bottom: 0;
        padding-top: 0;
        padding-bottom: 0;
    }
}

.toast-progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    animation: toastProgress linear forwards;
}
.toast-success .toast-progress-bar { background-color: var(--color-income); }
.toast-error .toast-progress-bar { background-color: var(--color-expense); }
.toast-warning .toast-progress-bar { background-color: var(--color-warning); }
.toast-info .toast-progress-bar { background-color: var(--color-info); }

@keyframes toastProgress {
    from { width: 100%; }
    to { width: 0%; }
}

/* ==========================================
   ITEM MUTATIONS & SKELETONS
=========================================== */
.item-highlight-flash {
    animation: itemFlash 2s var(--ease-emphasized) forwards;
}
@keyframes itemFlash {
    0% { background-color: var(--color-primary-soft); }
    100% { background-color: transparent; }
}

.item-deleting {
    transition: all var(--duration-slow) var(--ease-emphasized) !important;
    opacity: 0 !important;
    transform: scale(0.96) translateX(-12px) !important;
    max-height: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    overflow: hidden !important;
}

.skeleton-box {
    background: linear-gradient(
        90deg,
        var(--color-bg-secondary) 0%,
        var(--color-surface-active) 50%,
        var(--color-bg-secondary) 100%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ==========================================
   ACCESSIBILITY
=========================================== */
:focus-visible {
    outline: 3px solid rgb(37 99 235 / 0.35);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}