/* ===================================================
   支払通知ポータル - メインスタイルシート
   =================================================== */

/* --- Design Tokens --- */
:root {
    /* Colors - Deep Blue & Teal Accent */
    --color-bg: #0a0e1a;
    --color-bg-elevated: #111827;
    --color-bg-card: #1a2236;
    --color-bg-card-hover: #1e2a42;
    --color-bg-input: #0f1629;
    --color-bg-overlay: rgba(0, 0, 0, 0.6);

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    --color-border-focus: #38bdf8;

    --color-text: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-text-inverse: #0f172a;

    --color-primary: #38bdf8;
    --color-primary-hover: #7dd3fc;
    --color-primary-glow: rgba(56, 189, 248, 0.25);

    --color-accent: #a78bfa;
    --color-accent-hover: #c4b5fd;
    --color-accent-glow: rgba(167, 139, 250, 0.25);

    --color-success: #34d399;
    --color-success-bg: rgba(52, 211, 153, 0.1);
    --color-error: #f87171;
    --color-error-bg: rgba(248, 113, 113, 0.1);
    --color-warning: #fbbf24;
    --color-warning-bg: rgba(251, 191, 36, 0.1);
    --color-info: #60a5fa;
    --color-info-bg: rgba(96, 165, 250, 0.1);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
    --gradient-accent: linear-gradient(135deg, #a78bfa 0%, #f472b6 100%);
    --gradient-card: linear-gradient(145deg, rgba(26, 34, 54, 0.8), rgba(15, 22, 41, 0.6));
    --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(56, 189, 248, 0.15) 0%, transparent 60%);

    /* Typography */
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.9375rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.15);
    --shadow-glow-accent: 0 0 40px rgba(167, 139, 250, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Layout */
    --header-height: 64px;
    --sidebar-width: 280px;
    --max-width: 1200px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 500px;
    background: var(--gradient-glow);
    pointer-events: none;
    z-index: 0;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

img { max-width: 100%; height: auto; }

/* --- Header --- */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text);
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: opacity var(--transition-fast);
}

.header-logo:hover {
    color: var(--color-text);
    opacity: 0.85;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: white;
}

.header-nav {
    display: flex;
    gap: var(--space-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
}

.header-user {
    position: relative;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.user-info:hover {
    background: rgba(255, 255, 255, 0.06);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
}

.user-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.user-chevron {
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.user-info.open .user-chevron {
    transform: rotate(180deg);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 220px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-base);
    z-index: 100;
}

.user-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-header {
    padding: var(--space-md);
}

.dropdown-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.dropdown-role {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
}

/* --- Main Layout --- */
.app-main {
    position: relative;
    z-index: 1;
    min-height: calc(100vh - var(--header-height) - 60px);
    padding: calc(var(--header-height) + var(--space-2xl)) var(--space-lg) var(--space-2xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.app-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--color-border);
    padding: var(--space-lg);
    text-align: center;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* --- Page Header --- */
.page-header {
    margin-bottom: var(--space-2xl);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-xs);
}

.page-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.page-header-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* --- Cards --- */
.card {
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

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

.card-glass {
    background: rgba(26, 34, 54, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

/* --- Stats Grid --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.stat-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.stat-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.stat-card.accent::before {
    background: var(--gradient-accent);
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
    background: var(--color-primary-glow);
}

.stat-card.accent .stat-icon {
    color: var(--color-accent);
    background: var(--color-accent-glow);
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px 20px;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    line-height: 1.4;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 2px 12px var(--color-primary-glow);
}

.btn-primary:hover {
    box-shadow: 0 4px 20px var(--color-primary-glow);
    color: white;
    filter: brightness(1.1);
}

.btn-accent {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 2px 12px var(--color-accent-glow);
}

.btn-accent:hover {
    box-shadow: 0 4px 20px var(--color-accent-glow);
    color: white;
    filter: brightness(1.1);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-glow);
}

.btn-danger {
    background: var(--color-error);
    color: white;
}

.btn-danger:hover {
    filter: brightness(1.15);
    color: white;
}

.btn-sm {
    padding: 6px 14px;
    font-size: var(--font-size-xs);
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 14px 32px;
    font-size: var(--font-size-md);
    border-radius: var(--radius-lg);
}

.btn-xl {
    padding: 18px 48px;
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* --- Forms --- */
.form-group {
    margin-bottom: var(--space-lg);
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-error);
    margin-top: var(--space-xs);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
}

/* --- Tables --- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: var(--color-bg-elevated);
    padding: 12px 16px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid var(--color-border);
}

.data-table td {
    padding: 14px 16px;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* --- Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-error {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.badge-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-info {
    background: var(--color-info-bg);
    color: var(--color-info);
}

/* --- Flash Messages --- */
.flash-message {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
    font-size: var(--font-size-sm);
    animation: flashSlideIn 0.4s ease;
}

@keyframes flashSlideIn {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

.flash-success {
    background: var(--color-success-bg);
    border: 1px solid rgba(52, 211, 153, 0.3);
    color: var(--color-success);
}

.flash-error {
    background: var(--color-error-bg);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: var(--color-error);
}

.flash-warning {
    background: var(--color-warning-bg);
    border: 1px solid rgba(251, 191, 36, 0.3);
    color: var(--color-warning);
}

.flash-info {
    background: var(--color-info-bg);
    border: 1px solid rgba(96, 165, 250, 0.3);
    color: var(--color-info);
}

.flash-icon {
    font-size: var(--font-size-md);
    font-weight: 700;
}

.flash-text {
    flex: 1;
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: var(--font-size-lg);
    cursor: pointer;
    opacity: 0.6;
    padding: 0 4px;
    line-height: 1;
}

.flash-close:hover {
    opacity: 1;
}

/* --- Login Page --- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    position: relative;
}

.login-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: -1;
}

.login-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(167, 139, 250, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(244, 114, 182, 0.06) 0%, transparent 50%);
    animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(1%, -1%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-1deg); }
}

.login-container {
    width: 100%;
    max-width: 440px;
    animation: loginFadeIn 0.6s ease;
}

@keyframes loginFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-card {
    background: rgba(26, 34, 54, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl) var(--space-2xl);
    box-shadow: var(--shadow-xl);
}

.login-logo {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.login-logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: white;
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-glow);
}

.login-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.login-error {
    background: var(--color-error-bg);
    border: 1px solid rgba(248, 113, 113, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    color: var(--color-error);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

.login-form .form-group {
    position: relative;
}

.login-form .form-input {
    padding-left: 44px;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
    transition: color var(--transition-fast);
}

.form-input:focus + .input-icon,
.form-input:focus ~ .input-icon {
    color: var(--color-primary);
}

.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px;
    transition: color var(--transition-fast);
}

.password-toggle:hover {
    color: var(--color-text);
}

.login-btn {
    margin-top: var(--space-md);
}

/* --- Partner My Page --- */
.welcome-section {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.welcome-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.welcome-company {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

.drive-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: 24px 56px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    font-family: var(--font-family);
    font-size: var(--font-size-xl);
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    box-shadow: var(--shadow-glow), var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.drive-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.6s ease;
}

.drive-button:hover::before {
    left: 100%;
}

.drive-button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 0 60px rgba(56, 189, 248, 0.3), var(--shadow-xl);
    color: white;
}

.drive-button:active {
    transform: translateY(-1px) scale(0.99);
}

.drive-button-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
}

/* --- File List (Drive) --- */
.file-grid {
    display: grid;
    gap: var(--space-md);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.file-item:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-card-hover);
    transform: translateX(4px);
}

.file-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-error-bg);
    color: var(--color-error);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-weight: 600;
    font-size: var(--font-size-base);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    display: flex;
    gap: var(--space-md);
    margin-top: 4px;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.file-actions {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

/* --- Upload Area --- */
.upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-glow);
}

.upload-area.drag-over {
    transform: scale(1.01);
}

.upload-icon {
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    opacity: 0.7;
}

.upload-text {
    font-size: var(--font-size-md);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.upload-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.upload-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-progress {
    margin-top: var(--space-lg);
}

.progress-bar {
    height: 6px;
    background: var(--color-bg-input);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    width: 0%;
    transition: width var(--transition-base);
}

.progress-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    text-align: right;
}

/* --- Search & Filter --- */
.search-bar {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.search-input-wrapper {
    flex: 1;
    position: relative;
}

.search-input-wrapper .form-input {
    padding-left: 44px;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

/* --- Pagination --- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.page-btn,
.page-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.page-btn:hover,
.page-num:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
}

.page-num.active {
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
}

.page-dots {
    color: var(--color-text-muted);
    padding: 0 var(--space-xs);
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
}

.empty-icon {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.empty-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.empty-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

/* --- Modal / Dialog --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-bg-overlay);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 480px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.modal-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* --- Install Page --- */
.install-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.install-container {
    width: 100%;
    max-width: 600px;
    animation: loginFadeIn 0.6s ease;
}

.install-card {
    background: rgba(26, 34, 54, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-xl);
}

.install-steps {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.install-step {
    flex: 1;
    text-align: center;
    position: relative;
}

.install-step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
    transition: all var(--transition-base);
}

.install-step.active .install-step-num {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.install-step.done .install-step-num {
    background: var(--color-success);
    border-color: transparent;
    color: white;
}

.install-step-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.install-step.active .install-step-label {
    color: var(--color-primary);
}

/* --- Breadcrumb --- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-sm);
}

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

.breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb-sep {
    color: var(--color-text-muted);
    opacity: 0.5;
}

.breadcrumb-current {
    color: var(--color-text);
    font-weight: 500;
}

/* --- Action Bar --- */
.action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

/* --- Loading Spinner --- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 14, 26, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: inherit;
    z-index: 10;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeInUp 0.4s ease forwards;
    opacity: 0;
}

.animate-in:nth-child(1) { animation-delay: 0.05s; }
.animate-in:nth-child(2) { animation-delay: 0.1s; }
.animate-in:nth-child(3) { animation-delay: 0.15s; }
.animate-in:nth-child(4) { animation-delay: 0.2s; }
.animate-in:nth-child(5) { animation-delay: 0.25s; }
.animate-in:nth-child(6) { animation-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 768px) {
    :root {
        --font-size-2xl: 1.5rem;
        --font-size-3xl: 2rem;
    }

    .header-inner {
        padding: 0 var(--space-md);
    }

    .logo-text {
        display: none;
    }

    .header-nav {
        display: none;
    }

    .app-main {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
    }

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

    .search-bar {
        flex-direction: column;
    }

    .file-item {
        flex-wrap: wrap;
    }

    .file-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .drive-button {
        padding: 18px 36px;
        font-size: var(--font-size-lg);
    }

    .modal-content {
        padding: var(--space-xl);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }

    .action-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .page-header-actions {
        flex-direction: column;
    }

    .user-name {
        display: none;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .drive-button {
        padding: 16px 28px;
        font-size: var(--font-size-md);
    }

    .drive-button-icon {
        width: 40px;
        height: 40px;
    }
}