/* ============================================================
   DeltaRM IA — Global Stylesheet
   Dark refined dashboard with purple accents
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700&family=JetBrains+Mono:wght@300;400;500&family=Playfair+Display:wght@600;700&display=swap');

/* --- CSS Variables --- */
:root {
    /* Purple palette matching DeltaRM logo */
    --purple-50:  #f5f0ff;
    --purple-100: #ede5ff;
    --purple-200: #d4c4ff;
    --purple-300: #b794f6;
    --purple-400: #9b6dd7;
    --purple-500: #8040bf;   /* Primary — logo purple */
    --purple-600: #6d2fa8;
    --purple-700: #5a2091;
    --purple-800: #47177a;
    --purple-900: #341063;

    /* Neutrals — warm dark */
    --dark-950:  #0a0a0f;
    --dark-900:  #111118;
    --dark-850:  #16161f;
    --dark-800:  #1c1c28;
    --dark-700:  #262636;
    --dark-600:  #363648;
    --dark-500:  #4a4a60;
    --dark-400:  #6b6b85;
    --dark-300:  #9191a8;
    --dark-200:  #b8b8cc;
    --dark-100:  #d8d8e8;
    --dark-50:   #f0f0f8;

    /* Accents */
    --green-ok:  #34d399;
    --green-bg:  rgba(52, 211, 153, 0.12);
    --red-ko:    #f87171;
    --red-bg:    rgba(248, 113, 113, 0.12);
    --amber-warn:#fbbf24;
    --amber-bg:  rgba(251, 191, 36, 0.12);
    --blue-info: #60a5fa;

    /* Layout */
    --sidebar-w: 260px;
    --header-h:  64px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px rgba(128, 64, 191, 0.15);

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'DM Sans', system-ui, sans-serif;
    background: var(--dark-950);
    color: var(--dark-100);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Subtle animated gradient background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 10% 20%, rgba(128,64,191,0.06), transparent),
        radial-gradient(ellipse 60% 50% at 90% 80%, rgba(90,32,145,0.04), transparent);
    pointer-events: none;
    z-index: 0;
}

a { color: var(--purple-400); text-decoration: none; }
a:hover { color: var(--purple-300); }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--dark-600); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--dark-500); }

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.login-card {
    background: var(--dark-900);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-xl);
    padding: 48px 40px 40px;
    width: 400px;
    max-width: 90vw;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    animation: fadeUp 0.6s var(--ease-out);
}

.login-card .logo {
    display: block;
    margin: 0 auto 32px;
    height: 60px;
    filter: drop-shadow(0 0 12px rgba(128,64,191,0.3));
}

.login-card h1 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 8px;
    color: var(--dark-50);
}

.login-card .subtitle {
    text-align: center;
    color: var(--dark-400);
    font-size: 0.85rem;
    margin-bottom: 32px;
}

/* --- Forms --- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--dark-300);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 11px 14px;
    background: var(--dark-850);
    border: 1px solid var(--dark-600);
    border-radius: var(--radius-sm);
    color: var(--dark-50);
    font-family: inherit;
    font-size: 0.93rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.form-input:focus {
    border-color: var(--purple-500);
    box-shadow: 0 0 0 3px rgba(128,64,191,0.15);
}

.form-input::placeholder { color: var(--dark-500); }

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b6b85' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

textarea.form-input {
    resize: vertical;
    min-height: 60px;
    line-height: 1.5;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    outline: none;
    text-transform: none;
    letter-spacing: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
    color: #fff;
    box-shadow: 0 2px 8px rgba(128,64,191,0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--purple-400), var(--purple-500));
    box-shadow: 0 4px 16px rgba(128,64,191,0.4);
    transform: translateY(-1px);
}

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

.btn-primary:disabled {
    opacity: 0.5;
    pointer-events: none;
}

.btn-secondary {
    background: var(--dark-700);
    color: var(--dark-100);
}
.btn-secondary:hover {
    background: var(--dark-600);
}

.btn-full { width: 100%; }

.login-error {
    background: var(--red-bg);
    border: 1px solid rgba(248,113,113,0.2);
    color: var(--red-ko);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 16px;
    display: none;
}

/* ============================================================
   APP LAYOUT
   ============================================================ */
.app-layout {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-w);
    background: var(--dark-900);
    border-right: 1px solid var(--dark-700);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 20;
    transition: transform 0.3s var(--ease-out);
}

.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--dark-700);
}

.sidebar-header .logo {
    height: 42px;
    filter: drop-shadow(0 0 8px rgba(128,64,191,0.2));
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section-title {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--dark-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 16px 12px 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--dark-300);
    font-size: 0.88rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    margin-bottom: 2px;
}

.nav-item:hover {
    background: var(--dark-800);
    color: var(--dark-100);
}

.nav-item.active {
    background: rgba(128,64,191,0.12);
    color: var(--purple-300);
    font-weight: 500;
}

.nav-item .nav-icon {
    width: 18px;
    height: 18px;
    opacity: 0.7;
}

.nav-item.active .nav-icon { opacity: 1; }

.nav-item.disabled {
    opacity: 0.35;
    pointer-events: none;
}

.nav-badge {
    margin-left: auto;
    font-size: 0.65rem;
    padding: 2px 7px;
    border-radius: 99px;
    background: var(--dark-700);
    color: var(--dark-400);
    font-weight: 500;
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--dark-700);
    font-size: 0.78rem;
    color: var(--dark-500);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-footer .user-name {
    color: var(--dark-200);
    font-weight: 500;
}

.btn-logout {
    background: none;
    border: none;
    color: var(--dark-400);
    cursor: pointer;
    font-size: 0.78rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}
.btn-logout:hover { color: var(--red-ko); background: var(--red-bg); }

/* --- Main Content --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-header {
    padding: 24px 32px 20px;
    border-bottom: 1px solid var(--dark-800);
    background: rgba(10,10,15,0.6);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.page-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark-50);
}

.page-header .page-desc {
    font-size: 0.82rem;
    color: var(--dark-400);
    margin-top: 4px;
}

.page-body {
    flex: 1;
    padding: 24px 32px 48px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ============================================================
   PANELS / CARDS
   ============================================================ */
.panel {
    background: var(--dark-900);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--dark-800);
}

.panel-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-50);
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-title .icon {
    color: var(--purple-400);
    font-size: 1.1rem;
}

.panel-body {
    padding: 20px 24px;
}

/* ============================================================
   INPUT PANEL (top block)
   ============================================================ */
.input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

.input-grid .span-2 { grid-column: span 2; }
.input-grid .span-3 { grid-column: span 3; }

.input-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 8px;
}

/* Custom instructions sidebar */
.input-with-examples {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 0;
}

.examples-panel {
    border-left: 1px solid var(--dark-800);
    padding: 16px 20px;
    background: var(--dark-850);
    max-height: 400px;
    overflow-y: auto;
}

.examples-panel h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--dark-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.example-chip {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 10px;
    margin-bottom: 4px;
    background: var(--dark-800);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--dark-200);
    font-size: 0.78rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s;
    line-height: 1.4;
}

.example-chip:hover {
    background: var(--dark-700);
    border-color: var(--purple-700);
    color: var(--dark-50);
}

.example-chip:active {
    background: rgba(128,64,191,0.15);
    border-color: var(--purple-500);
}

/* ============================================================
   RESULTS PANEL (bottom block)
   ============================================================ */
.results-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--dark-500);
}

.results-empty .empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

.results-empty p {
    font-size: 0.9rem;
}

/* Summary cards grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--dark-850);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
}

.kpi-card .kpi-value {
    font-size: 1.6rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    color: var(--dark-50);
    line-height: 1.2;
}

.kpi-card .kpi-value.good { color: var(--green-ok); }
.kpi-card .kpi-value.bad { color: var(--red-ko); }
.kpi-card .kpi-value.warn { color: var(--amber-warn); }

.kpi-card .kpi-label {
    font-size: 0.72rem;
    color: var(--dark-400);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Result sections */
.result-section {
    margin-bottom: 24px;
}

.result-section h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--purple-300);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-text {
    background: var(--dark-850);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--dark-100);
}

/* Points list */
.points-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.point-item {
    background: var(--dark-850);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    border-left: 3px solid var(--dark-600);
}

.point-item.severity-haute { border-left-color: var(--red-ko); }
.point-item.severity-moyenne { border-left-color: var(--amber-warn); }
.point-item.severity-basse { border-left-color: var(--green-ok); }

.point-item .point-title {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--dark-50);
    margin-bottom: 4px;
}

.point-item .point-desc {
    font-size: 0.82rem;
    color: var(--dark-300);
    line-height: 1.5;
}

.severity-badge {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 8px;
    border-radius: 99px;
    margin-left: 8px;
    vertical-align: middle;
}
.severity-badge.haute { background: var(--red-bg); color: var(--red-ko); }
.severity-badge.moyenne { background: var(--amber-bg); color: var(--amber-warn); }
.severity-badge.basse { background: var(--green-bg); color: var(--green-ok); }

/* Trends */
.trends-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.trend-box {
    background: var(--dark-850);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-md);
    padding: 16px;
}

.trend-box h4 {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.trend-box.positive h4 { color: var(--green-ok); }
.trend-box.negative h4 { color: var(--red-ko); }

.trend-box ul {
    list-style: none;
    padding: 0;
}

.trend-box li {
    font-size: 0.82rem;
    color: var(--dark-200);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
    line-height: 1.5;
}

.trend-box.positive li::before {
    content: '▲';
    position: absolute;
    left: 0;
    color: var(--green-ok);
    font-size: 0.65rem;
    top: 6px;
}

.trend-box.negative li::before {
    content: '▼';
    position: absolute;
    left: 0;
    color: var(--red-ko);
    font-size: 0.65rem;
    top: 6px;
}

/* Recommendations */
.reco-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.82rem;
}

.reco-table th {
    text-align: left;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--dark-400);
    padding: 10px 14px;
    background: var(--dark-850);
    border-bottom: 1px solid var(--dark-700);
}

.reco-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--dark-800);
    color: var(--dark-200);
    vertical-align: top;
}

.reco-table tr:last-child td { border-bottom: none; }
.reco-table tr:hover td { background: var(--dark-850); }

/* Chart area */
.chart-container {
    background: var(--dark-850);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 16px;
}

.chart-container canvas {
    max-height: 280px;
}

/* Raw JSON toggle */
.json-toggle {
    font-size: 0.78rem;
    color: var(--dark-400);
    cursor: pointer;
    background: none;
    border: 1px solid var(--dark-700);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    transition: all 0.15s;
}
.json-toggle:hover { background: var(--dark-800); color: var(--dark-200); }

.json-raw {
    display: none;
    margin-top: 12px;
}

.json-raw.visible { display: block; }

.json-raw pre {
    background: var(--dark-950);
    border: 1px solid var(--dark-700);
    border-radius: var(--radius-md);
    padding: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--dark-200);
    overflow-x: auto;
    max-height: 400px;
    line-height: 1.6;
}

/* ============================================================
   LOADER
   ============================================================ */
.loader-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10,10,15,0.85);
    backdrop-filter: blur(8px);
    z-index: 100;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 24px;
}

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

.loader-spinner {
    width: 56px;
    height: 56px;
    position: relative;
}

.loader-spinner::before,
.loader-spinner::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid transparent;
}

.loader-spinner::before {
    border-top-color: var(--purple-400);
    animation: spin 1s linear infinite;
}

.loader-spinner::after {
    border-bottom-color: var(--purple-600);
    animation: spin 1.5s linear infinite reverse;
    inset: 6px;
}

.loader-text {
    color: var(--dark-200);
    font-size: 0.9rem;
    text-align: center;
}

.loader-text .loader-sub {
    color: var(--dark-500);
    font-size: 0.78rem;
    margin-top: 4px;
}

.loader-dots::after {
    content: '';
    animation: dots 1.5s steps(4) infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes dots {
    0%   { content: ''; }
    25%  { content: '.'; }
    50%  { content: '..'; }
    75%  { content: '...'; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.animate-fade-up {
    animation: fadeUp 0.5s var(--ease-out) both;
}

.animate-fade-in {
    animation: fadeIn 0.4s ease both;
}

/* Stagger children */
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.1s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.2s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }
.stagger > *:nth-child(6) { animation-delay: 0.3s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
    .input-with-examples {
        grid-template-columns: 1fr;
    }
    .examples-panel {
        border-left: none;
        border-top: 1px solid var(--dark-800);
        max-height: 200px;
    }
}

@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .input-grid {
        grid-template-columns: 1fr;
    }
    .input-grid .span-2,
    .input-grid .span-3 { grid-column: span 1; }
    .trends-grid { grid-template-columns: 1fr; }
    .page-body { padding: 16px; }
}