/* auth-style.css — в стиле Roqvexis */

/* ============================================
   ПЕРЕМЕННЫЕ
   ============================================ */
:root {
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --shadow-2xl: 0 30px 80px rgba(0,0,0,0.20);

    /* границы для тёмной темы */
    --border-subtle:  rgba(148, 163, 184, 0.20);
    --border-default: rgba(148, 163, 184, 0.28);
    --border-strong:  rgba(148, 163, 184, 0.40);
    --border-inner:   rgba(255, 255, 255, 0.08);
}

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

html, body {
    min-height: 100vh;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-900);
    color: var(--gray-100);
    display: grid;
    place-items: center;
    padding: 24px;
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s ease, color 0.3s ease;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background:
        radial-gradient(circle at 8% 8%, rgba(59, 130, 246, 0.15) 0, transparent 40%),
        radial-gradient(circle at 92% 92%, rgba(124, 58, 237, 0.12) 0, transparent 40%),
        var(--gray-900);
}

/* ============================================
   СВЕТЛАЯ ТЕМА
   ============================================ */
body[data-theme="light"] {
    background: var(--gray-50);
    color: var(--gray-800);
}

body[data-theme="light"]::before {
    background:
        radial-gradient(circle at 8% 8%, rgba(59, 130, 246, 0.10) 0, transparent 40%),
        radial-gradient(circle at 92% 92%, rgba(124, 58, 237, 0.08) 0, transparent 40%),
        var(--gray-50);
}

body[data-theme="light"] .auth-card {
    background: #ffffff;
    border-color: var(--gray-200);
    box-shadow: 0 24px 60px rgba(29, 47, 78, 0.10);
}

body[data-theme="light"] .auth-panel {
    background: #ffffff;
}

body[data-theme="light"] .form-switch {
    background: var(--gray-100);
    border-color: var(--gray-200);
}

body[data-theme="light"] .switch-btn {
    color: var(--gray-500);
}

body[data-theme="light"] .switch-btn.active {
    color: var(--primary-700);
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
}

body[data-theme="light"] .auth-form h2 {
    color: var(--gray-900);
}

body[data-theme="light"] .auth-form header p {
    color: var(--gray-500);
}

body[data-theme="light"] .input-group label {
    color: var(--gray-700);
}

body[data-theme="light"] .input-group input {
    background: #ffffff;
    border-color: var(--gray-300);
    color: var(--gray-900);
}

body[data-theme="light"] .input-group input::placeholder {
    color: var(--gray-400);
}

body[data-theme="light"] .input-group input:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px var(--primary-100);
}

body[data-theme="light"] .input-group small {
    color: var(--gray-500);
}

body[data-theme="light"] .form-options a,
body[data-theme="light"] .text-btn {
    color: var(--primary-600);
}

body[data-theme="light"] .check {
    color: var(--gray-600);
}

body[data-theme="light"] .form-foot {
    color: var(--gray-500);
}

body[data-theme="light"] .brand-logo {
    color: #ffffff;
}

body[data-theme="light"] .auth-brand {
    background: linear-gradient(145deg, var(--primary-700), var(--primary-500) 60%, var(--primary-800));
}

/* ============================================
   ОБЁРТКА
   ============================================ */
.auth-shell {
    width: min(100%, 1040px);
}

.auth-card {
    display: grid;
    grid-template-columns: minmax(300px, 0.9fr) minmax(360px, 1fr);
    overflow: hidden;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-default);
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    box-shadow:
        0 0 0 1px rgba(148, 163, 184, 0.05),
        var(--shadow-2xl);
}

/* ============================================
   ЛЕВАЯ ПАНЕЛЬ
   ============================================ */
.auth-brand {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 44px 40px;
    color: #ffffff;
    background: linear-gradient(145deg, #0b1a3f 0%, var(--primary-700) 55%, var(--primary-500) 100%);
    overflow: hidden;
    border-right: 1px solid var(--border-subtle);
}

.auth-brand::before,
.auth-brand::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.auth-brand::before {
    width: 280px;
    height: 280px;
    top: -100px;
    right: -80px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.35), transparent 70%);
}

.auth-brand::after {
    width: 220px;
    height: 220px;
    bottom: -80px;
    left: -60px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.35), transparent 70%);
}

.brand-logo {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #ffffff;
    text-decoration: none;
    margin-bottom: 32px;
}

.brand-logo span {
    display: inline-grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    font-size: 16px;
    backdrop-filter: blur(6px);
}

.brand-copy {
    position: relative;
    z-index: 1;
    margin: auto 0 32px;
}

.brand-copy .eyebrow {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(219, 234, 254, 0.9);
    margin-bottom: 14px;
}

.brand-copy h1 {
    font-size: clamp(1.65rem, 2.6vw, 2.1rem);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.6px;
    color: #ffffff;
    margin-bottom: 14px;
}

.brand-copy p {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(224, 231, 255, 0.85);
    max-width: 320px;
}

.feature-list {
    position: relative;
    z-index: 1;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    padding: 9px 14px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.feature-list li::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary-300);
    box-shadow: 0 0 8px var(--primary-400);
    flex-shrink: 0;
}

/* ============================================
   ПРАВАЯ ПАНЕЛЬ — ФОРМЫ
   ============================================ */
.auth-panel {
    padding: 40px 44px;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* переключатель */
.form-switch {
    display: flex;
    gap: 4px;
    padding: 4px;
    border-radius: var(--radius-md);
    background: rgba(148, 163, 184, 0.10);
    border: 1px solid var(--border-subtle);
    margin-bottom: 32px;
}

.switch-btn {
    flex: 1;
    padding: 10px 14px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--gray-400);
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.switch-btn:hover:not(.active) {
    color: var(--gray-200);
}

.switch-btn.active {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: #ffffff;
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.3);
}

/* формы */
.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeInUp 0.35s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.auth-form header {
    margin-bottom: 24px;
}

.auth-form h2 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.4px;
    color: #ffffff;
    margin-bottom: 8px;
}

.auth-form header p {
    font-size: 14px;
    line-height: 1.55;
    color: var(--gray-400);
}

/* поля ввода */
.input-group {
    margin-bottom: 16px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-300);
}

.input-group input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(15, 23, 42, 0.6);
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-md);
    color: #ffffff;
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

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

.input-group input:hover:not(:focus) {
    border-color: rgba(148, 163, 184, 0.55);
}

.input-group input:focus {
    border-color: var(--primary-500);
    background: rgba(59, 130, 246, 0.05);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18);
}

.input-group input.invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
}

.input-group input.valid {
    border-color: var(--success);
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.15);
}

.input-group small {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--gray-500);
}

/* опции формы */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin: 4px 0 20px;
}

.form-options a,
.text-btn {
    color: var(--primary-400);
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: color 0.2s ease;
}

.form-options a:hover,
.text-btn:hover {
    color: var(--primary-300);
}

.check {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--gray-400);
    cursor: pointer;
    line-height: 1.4;
}

.check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-500);
    cursor: pointer;
    flex-shrink: 0;
}

.terms {
    margin: 6px 0 20px;
    align-items: flex-start;
}

.terms a {
    color: var(--primary-400);
    text-decoration: none;
    font-weight: 600;
}

.terms a:hover {
    color: var(--primary-300);
}

/* кнопка отправки */
.submit-btn {
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: #ffffff;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    margin-top: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35);
}

.submit-btn:active:not(:disabled) {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: linear-gradient(135deg, var(--gray-600), var(--gray-700));
    box-shadow: none;
}

.submit-btn.loading {
    animation: pulse-btn 1.5s ease-in-out infinite;
}

@keyframes pulse-btn {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.6; }
}

/* подвал формы */
.form-foot {
    margin-top: 20px;
    text-align: center;
    font-size: 13.5px;
    color: var(--gray-500);
}

.form-foot .text-btn {
    font-weight: 700;
    color: var(--primary-400);
    margin-left: 4px;
}

.form-foot .text-btn:hover {
    color: var(--primary-300);
}

/* ============================================
   TOAST
   ============================================ */
.toast-message {
    position: fixed;
    z-index: 999999;
    left: 50%;
    bottom: 24px;
    max-width: calc(100% - 32px);
    padding: 14px 22px;
    border-radius: var(--radius-md);
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    background: var(--gray-800);
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translate(-50%, 16px);
    pointer-events: none;
    transition: all 0.25s ease;
}

.toast-message.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

.toast-message.error {
    background: var(--danger);
    border-color: rgba(255, 255, 255, 0.15);
}

.toast-message.success {
    background: var(--success);
    border-color: rgba(255, 255, 255, 0.15);
}

/* ============================================
   АДАПТИВ
   ============================================ */
@media (max-width: 860px) {
    body {
        padding: 16px;
    }

    .auth-card {
        grid-template-columns: 1fr;
        border-radius: var(--radius-lg);
    }

    .auth-brand {
        padding: 30px 26px;
        min-height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
    }

    .brand-copy {
        margin: 20px 0 22px;
    }

    .brand-copy h1 {
        font-size: 24px;
    }

    .feature-list {
        gap: 8px;
    }

    .feature-list li {
        padding: 8px 12px;
        font-size: 13px;
    }

    .auth-panel {
        padding: 30px 24px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .auth-brand {
        padding: 24px 20px;
    }

    .brand-logo {
        font-size: 17px;
        margin-bottom: 20px;
    }

    .brand-logo span {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }

    .brand-copy h1 {
        font-size: 20px;
    }

    .auth-panel {
        padding: 24px 18px;
    }

    .auth-form h2 {
        font-size: 19px;
    }

    .form-switch {
        margin-bottom: 22px;
    }

    .switch-btn {
        font-size: 13px;
        padding: 9px 10px;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}