/* ============================================
           SanMaster Login — Design Spec V3
           Theme: Dark / Corvia Blue
           Font: Inter
           Layout: Split-screen (brand | form)
           ============================================ */

        :root {
            /* Corvia Color Palette */
            --corvia-dark: #0a1628;
            --corvia-dark-secondary: #111d35;
            --corvia-navy: #162241;
            --corvia-accent: #2563eb;
            --corvia-accent-light: #3b82f6;
            --corvia-accent-lighter: #60a5fa;
            --corvia-accent-glow: rgba(37, 99, 235, 0.15);
            --corvia-accent-glow-strong: rgba(37, 99, 235, 0.35);
            --corvia-teal: #0891b2;
            --corvia-teal-light: #22d3ee;
            --corvia-white: #ffffff;
            --corvia-off-white: #f8fafc;
            --corvia-gray-50: #f1f5f9;
            --corvia-gray-100: #e2e8f0;
            --corvia-gray-200: #cbd5e1;
            --corvia-gray-400: #94a3b8;
            --corvia-gray-500: #64748b;
            --corvia-gray-600: #475569;
            --corvia-gray-700: #334155;
            --corvia-gray-800: #1e293b;
            --corvia-gray-900: #0f172a;
            --corvia-success: #10b981;
            --corvia-warning: #f59e0b;
            --corvia-danger: #ef4444;
            --corvia-info: #06b6d4;

            --sm-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

        * { box-sizing: border-box; }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--sm-font);
            background-color: var(--corvia-dark);
            color: var(--corvia-gray-100);
            min-height: 100vh;
            overflow: hidden;
        }

        /* ── SPLIT SCREEN CONTAINER ── */
        .login-wrapper {
            display: flex;
            min-height: 100vh;
            width: 100%;
        }

        /* ── LEFT: BRAND PANEL ── */
        .brand-panel {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, var(--corvia-navy) 0%, var(--corvia-dark) 60%, var(--corvia-dark-secondary) 100%);
            overflow: hidden;
            padding: 3rem;
        }

        /* Animated gradient overlay */
        .brand-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(
                45deg,
                rgba(37, 99, 235, 0.12) 0%,
                rgba(10, 22, 40, 0.4) 50%,
                rgba(8, 145, 178, 0.08) 100%
            );
            animation: gradientShift 8s ease-in-out infinite alternate;
        }

        @keyframes gradientShift {
            0%   { opacity: 0.6; }
            100% { opacity: 1; }
        }

        /* Decorative dot grid */
        .brand-panel::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }

        /* Floating ring decoration */
        .brand-decor-ring {
            position: absolute;
            border-radius: 50%;
            border: 1px solid rgba(37, 99, 235, 0.12);
            pointer-events: none;
        }
        .brand-decor-ring.ring-1 {
            width: 300px; height: 300px;
            top: -60px; left: -80px;
            animation: floatRing 12s ease-in-out infinite;
        }
        .brand-decor-ring.ring-2 {
            width: 200px; height: 200px;
            bottom: -40px; right: -40px;
            animation: floatRing 10s ease-in-out infinite reverse;
        }
        .brand-decor-ring.ring-3 {
            width: 150px; height: 150px;
            top: 40%; left: 60%;
            border-color: rgba(8, 145, 178, 0.1);
            animation: floatRing 14s ease-in-out infinite;
        }

        @keyframes floatRing {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            50%      { transform: translate(15px, -15px) rotate(8deg); }
        }

        .brand-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 400px;
        }

        .brand-logo {
            width: 260px;
            max-width: 100%;
            margin-bottom: 2rem;
            filter: drop-shadow(0 4px 20px var(--corvia-accent-glow-strong));
        }

        .brand-tagline {
            font-size: 1.125rem;
            font-weight: 400;
            color: var(--corvia-gray-200);
            line-height: 1.7;
            margin: 0;
        }

        .brand-tagline strong {
            color: var(--corvia-accent-lighter);
            font-weight: 600;
        }

        .brand-features {
            list-style: none;
            padding: 0;
            margin: 2.5rem 0 0;
            text-align: left;
        }

        .brand-features li {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.6rem 0;
            font-size: 0.875rem;
            color: var(--corvia-gray-200);
        }

        .brand-features li i {
            font-size: 1.125rem;
            color: var(--corvia-accent-lighter);
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }

        /* ── RIGHT: FORM PANEL ── */
        .form-panel {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 3rem 2rem 0;
            background-color: var(--corvia-dark-secondary);
            position: relative;
            min-height: 100vh;
        }

        /* Subtle top-left glow on form panel */
        .form-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 50%;
            height: 50%;
            background: radial-gradient(ellipse at top left, var(--corvia-accent-glow), transparent 70%);
            pointer-events: none;
        }

        .form-container {
            width: 100%;
            max-width: 420px;
            position: relative;
            z-index: 1;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .form-header {
            margin-bottom: 2rem;
        }

        .form-header h1 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--corvia-white);
            margin: 0 0 0.5rem;
        }

        .form-header p {
            font-size: 0.9rem;
            color: var(--corvia-gray-400);
            margin: 0;
        }

        /* ── Mobile logo (hidden on desktop) ── */
        .mobile-logo {
            display: none;
            margin-bottom: 2rem;
        }

        .mobile-logo img {
            height: 36px;
        }

        /* ── FORM STYLES ── */
        .form-field {
            margin-bottom: 1.25rem;
        }

        .form-field label {
            display: block;
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--corvia-gray-200);
            margin-bottom: 0.5rem;
            letter-spacing: 0.01em;
        }

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

        .input-wrapper i.input-icon {
            position: absolute;
            left: 14px;
            font-size: 1.125rem;
            color: var(--corvia-gray-500);
            pointer-events: none;
            transition: color 0.2s;
            z-index: 1;
        }

        .input-wrapper input {
            width: 100%;
            padding: 0.75rem 0.875rem 0.75rem 2.75rem;
            font-family: var(--sm-font);
            font-size: 0.9rem;
            color: var(--corvia-gray-50);
            background-color: var(--corvia-gray-800);
            border: 1.5px solid var(--corvia-gray-700);
            border-radius: 10px;
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
        }

        .input-wrapper input::placeholder {
            color: var(--corvia-gray-500);
        }

        .input-wrapper input:focus {
            border-color: var(--corvia-accent);
            box-shadow: 0 0 0 3px var(--corvia-accent-glow);
            background-color: var(--corvia-gray-900);
        }

        .input-wrapper input:focus ~ i.input-icon,
        .input-wrapper input:focus + i.input-icon {
            color: var(--corvia-accent-lighter);
        }

        /* Password toggle button */
        .input-wrapper .toggle-password {
            position: absolute;
            right: 12px;
            background: none;
            border: none;
            color: var(--corvia-gray-500);
            cursor: pointer;
            font-size: 1.125rem;
            padding: 4px;
            transition: color 0.2s;
            z-index: 1;
        }

        .input-wrapper .toggle-password:hover {
            color: var(--corvia-gray-200);
        }

        /* ── REMEMBER ME / CHECKBOX ── */
        .form-options {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1.5rem;
        }

        .custom-checkbox {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
        }

        .custom-checkbox input[type="checkbox"] {
            width: 16px;
            height: 16px;
            accent-color: var(--corvia-accent);
            cursor: pointer;
        }

        .custom-checkbox span {
            font-size: 0.8125rem;
            color: var(--corvia-gray-400);
            user-select: none;
        }

        /* ── SUBMIT BUTTON ── */
        .btn-login {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            width: 100%;
            padding: 0.8rem 1.5rem;
            font-family: var(--sm-font);
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--corvia-white);
            background: linear-gradient(135deg, var(--corvia-accent) 0%, var(--corvia-accent-light) 100%);
            border: none;
            border-radius: 10px;
            cursor: pointer;
            transition: transform 0.15s, box-shadow 0.2s, opacity 0.2s;
            letter-spacing: 0.01em;
        }

        .btn-login:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 24px var(--corvia-accent-glow-strong);
        }

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

        /* Loading spinner (hidden by default) */
        .btn-login .spinner {
            display: none;
            width: 18px;
            height: 18px;
            border: 2px solid rgba(255,255,255,0.3);
            border-top-color: var(--corvia-white);
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }

        .btn-login.is-loading .spinner {
            display: inline-block;
        }

        .btn-login.is-loading .btn-text {
            display: none;
        }

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

        /* ── ERROR ALERT ── */
        .login-error {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            padding: 0.75rem 1rem;
            background-color: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.25);
            border-radius: 10px;
            margin-bottom: 1.25rem;
            font-size: 0.8125rem;
            color: #fca5a5;
        }

        .login-error i {
            font-size: 1.125rem;
            color: var(--corvia-danger);
            flex-shrink: 0;
        }

        /* ── FOOTER (V3: full-width, centered, spacious) ── */
        .login-footer {
            width: 100%;
            padding: 1.25rem 2rem 1.5rem;
            margin-top: auto;
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        .login-footer .content-footer {
            background: transparent !important;
            border-top: 1px solid var(--corvia-gray-700);
            padding: 1.25rem 1rem 0.75rem !important;
            font-size: 0.8125rem;
            color: var(--corvia-gray-400);
        }

        .login-footer .content-footer .container-xxl {
            max-width: 100% !important;
            padding: 0 0.5rem !important;
            flex-direction: column !important;
            align-items: center !important;
            text-align: center;
            gap: 0.5rem;
        }

        .login-footer .content-footer .container-xxl > div {
            text-align: center;
        }

        /* Show support info on all screens inside footer */
        .login-footer .content-footer .d-none {
            display: block !important;
        }

        .login-footer .content-footer a {
            color: var(--corvia-accent-lighter);
            text-decoration: none;
        }

        .login-footer .content-footer a:hover {
            color: var(--corvia-accent-light);
        }

        /* ============================================
           RESPONSIVE
           ============================================ */

        /* Tablet & below: hide brand panel, show mobile logo */
        @media (max-width: 991.98px) {
            .brand-panel {
                display: none;
            }

            .form-panel {
                flex: 1;
            }

            .mobile-logo {
                display: block;
            }
        }

        /* Small phones */
        @media (max-width: 480px) {
            .form-panel {
                padding: 2rem 1.25rem 0;
            }

            .form-header h1 {
                font-size: 1.5rem;
            }

            .login-footer {
                padding: 1rem 1rem 1.25rem;
            }
        }

        /* ═══ LIGHT MODE ═══ */
        html.light-mode {
            --corvia-dark: #f5f5f9;
            --corvia-dark-secondary: #ffffff;
            --corvia-navy: #e8edf5;
            --corvia-white: #1a1a2e;
            --corvia-gray-50: #333;
            --corvia-gray-100: #444;
            --corvia-gray-200: #555;
            --corvia-gray-400: #6c757d;
            --corvia-gray-500: #888;
            --corvia-gray-700: #dee2e6;
            --corvia-gray-800: #f8f9fa;
            --corvia-gray-900: #ffffff;
            --corvia-accent-glow: rgba(37, 99, 235, 0.08);
            --corvia-accent-glow-strong: rgba(37, 99, 235, 0.2);
        }

        html.light-mode .brand-panel {
            background: linear-gradient(135deg, #e8edf5 0%, #dce3f0 60%, #f0f4fa 100%);
        }

        html.light-mode .brand-panel::before {
            background: linear-gradient(45deg, rgba(37,99,235,0.06) 0%, rgba(240,244,250,0.3) 50%, rgba(8,145,178,0.04) 100%);
        }

        html.light-mode .brand-panel::after {
            background-image: radial-gradient(rgba(0,0,0,0.04) 1px, transparent 1px);
        }

        html.light-mode .brand-decor-ring {
            border-color: rgba(37, 99, 235, 0.08);
        }

        html.light-mode .brand-logo {
            filter: none;
        }

        html.light-mode .brand-tagline strong {
            color: var(--corvia-accent);
        }

        html.light-mode .form-panel::before {
            background: radial-gradient(ellipse at top left, rgba(37,99,235,0.04), transparent 70%);
        }

        html.light-mode .input-wrapper input {
            color: #333;
            background-color: #f8f9fa;
            border-color: #dee2e6;
        }

        html.light-mode .input-wrapper input:focus {
            background-color: #fff;
            border-color: var(--corvia-accent);
        }

        html.light-mode .input-wrapper input::placeholder {
            color: #adb5bd;
        }

        html.light-mode .login-footer {
            border-top-color: #e9ecef !important;
            color: #6c757d;
        }

        /* ============================================
           AUTH FLOW EXTRAS — tema düğmesi, şifremi unuttum, OTP doğrulama
           (login sayfasıyla ortak: _AuthLayout.cshtml)
           ============================================ */

        .auth-theme-toggle {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 9999;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 1.2rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .auth-theme-toggle:hover {
            transform: scale(1.1);
        }

        html.light-mode .auth-theme-toggle {
            background: rgba(0, 0, 0, 0.05);
            border-color: rgba(0, 0, 0, 0.1);
            color: #333;
        }

        .form-link {
            font-size: 0.8125rem;
            color: var(--corvia-accent-lighter);
            text-decoration: none;
        }

        .form-link:hover {
            color: var(--corvia-accent-light);
            text-decoration: underline;
        }

        .form-back {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            margin-top: 1.5rem;
            font-size: 0.8125rem;
            color: var(--corvia-gray-400);
            text-decoration: none;
        }

        .form-back:hover {
            color: var(--corvia-gray-200);
        }

        /* Başarı mesajı (login-error'ın yeşil karşılığı) */
        .login-success {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            padding: 0.75rem 1rem;
            background-color: rgba(16, 185, 129, 0.1);
            border: 1px solid rgba(16, 185, 129, 0.25);
            border-radius: 10px;
            margin-bottom: 1.25rem;
            font-size: 0.8125rem;
            color: #6ee7b7;
        }

        .login-success i {
            font-size: 1.125rem;
            color: var(--corvia-success);
            flex-shrink: 0;
        }

        html.light-mode .login-success {
            color: #047857;
        }

        /* Adım göstergesi (şifremi unuttum: hesap → kod → yeni şifre) */
        .form-steps {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .form-steps span {
            flex: 1;
            height: 4px;
            border-radius: 2px;
            background: var(--corvia-gray-700);
        }

        .form-steps span.active {
            background: var(--corvia-accent);
        }

        .form-hint {
            font-size: 0.75rem;
            color: var(--corvia-gray-500);
            margin-top: 0.4rem;
        }

        .form-hint strong {
            color: var(--corvia-gray-200);
            font-weight: 600;
        }

        /* 6 haneli kod alanı */
        .input-wrapper input.otp-input {
            letter-spacing: 0.5em;
            font-size: 1.375rem;
            font-weight: 600;
            font-variant-numeric: tabular-nums;
        }

        .resend-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
            font-size: 0.8125rem;
            color: var(--corvia-gray-400);
        }

        .btn-link-plain {
            background: none;
            border: none;
            padding: 0;
            font: inherit;
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--corvia-accent-lighter);
            cursor: pointer;
        }

        .btn-link-plain:hover {
            text-decoration: underline;
        }

        .btn-link-plain:disabled {
            color: var(--corvia-gray-500);
            cursor: default;
            text-decoration: none;
        }