/* =========================================
   ПЕРЕМЕННЫЕ
   ========================================= */
   :root {
    --primary: #0066ff;
    --accent: #00d4ff;
    --text-main: #1a1f2b;
    --text-muted: #6b7a90;
    --bg-body: #0f172a;
    --bg-card: rgba(255, 255, 255, 0.95);
    --border-color: rgba(0, 102, 255, 0.2);
    --success: #28a745;
    --error: #dc3545;
}

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

body {
    font-family: 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-body);
    background-image:
        radial-gradient(circle at 10% 20%, rgba(0, 102, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 40%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px 15px;
    color: var(--text-main);
}

/* Декоративные круги */
.bg-circle {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    opacity: 0.6;
}
.circle-1 { width: 300px; height: 300px; background: var(--primary); top: -100px; left: -100px; }
.circle-2 { width: 400px; height: 400px; background: var(--accent); bottom: -150px; right: -150px; }

/* =========================================
   ОСНОВНАЯ КАРТОЧКА
   ========================================= */
.page-wrapper {
    width: 100%;
    max-width: 700px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.page-wrapper::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
    background-size: 200% 100%;
    animation: gradientMove 3s linear infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* =========================================
   ШАПКА
   ========================================= */
.company-info { text-align: center; margin-bottom: 25px; }

.company-info h2 {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 1.5px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 5px;
}

h1 {
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 25px;
    font-weight: 700;
}

/* =========================================
   ТАБЛИЦА ФОРМЫ
   ========================================= */
.form-table {
    width: 100%;
    border-collapse: collapse;
}

.form-table td {
    padding: 6px 8px;
    vertical-align: middle;
}

.col-label {
    width: 180px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    text-align: right;
    padding-right: 15px;
}

.col-input {
    position: relative;
}

.col-input input {
    width: 100%;
    padding: 10px 42px 10px 14px;
    border: 1px solid #dce1e6;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: all 0.3s;
    background: #fff;
    color: var(--text-main);
    font-family: inherit;
}

.col-input input::placeholder {
    color: #aab4c3;
}

.col-input input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.hint {
    font-size: 11px;
    color: var(--text-muted);
    font-style: italic;
    padding-left: 15px !important;
    padding-bottom: 10px !important;
}

/* Обёртка только вокруг input + иконок:
   чтобы иконки центрировались по полю, а не по всей ячейке
   с сообщением AJAX-проверки */
.input-wrap {
    position: relative;
}

/* =========================================
   ИКОНКИ ВАЛИДАЦИИ
   ========================================= */

/* По умолчанию обе иконки скрыты */
.col-input .fa-check,
.col-input .fa-times {
    display: none;
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
    pointer-events: none;
}

.col-input .fa-check { color: var(--success); }
.col-input .fa-times { color: var(--error); }

/* 
  Показываем иконки ТОЛЬКО когда в поле есть хотя бы один символ.
  :not(:placeholder-shown) — значит "placeholder НЕ виден", то есть поле непустое.
*/

/* Галочка — если поле валидно И не пустое */
.col-input input:valid:not(:placeholder-shown) ~ .fa-check {
    display: inline-block;
}

/* Крестик — если поле невалидно И не пустое */
.col-input input:invalid:not(:placeholder-shown) ~ .fa-times {
    display: inline-block;
}

/* =========================================
   СООБЩЕНИЯ AJAX-ПРОВЕРКИ (Практическая №11)
   ========================================= */
.field-message {
    display: block;
    font-size: 11px;
    line-height: 1.35;
    margin-top: 5px;
    min-height: 0;
}

.field-message-ok { color: var(--success); }
.field-message-error { color: var(--error); }
.field-message-check { color: var(--text-muted); }

/* =========================================
   КНОПКИ
   ========================================= */
.form-buttons {
    display: flex;
    gap: 15px;
    margin-top: 25px;
    justify-content: center;
}

.btn-submit,
.btn-reset {
    padding: 14px 30px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-submit {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(0, 102, 255, 0.4);
}

.btn-submit:disabled {
    background: #b8c2d0;
    cursor: not-allowed;
    box-shadow: none;
    opacity: 0.7;
}

.btn-reset {
    background: #f0f3f7;
    color: var(--text-muted);
}

.btn-reset:hover {
    background: #e1e7ee;
    color: var(--text-main);
}

/* =========================================
   ПРОФИЛЬ / УСПЕХ
   ========================================= */
.profile-card {
    padding: 20px;
    background: rgba(0, 102, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 16px;
}

.error-box {
    background: #fff3cd;
    color: #856404;
    padding: 12px 15px;
    border-radius: 8px;
    border-left: 4px solid #ffc107;
    font-size: 13px;
    margin-bottom: 20px;
}

.error-box p { margin: 5px 0; }

.success-box {
    background: #d4edda;
    color: #155724;
    padding: 12px 15px;
    border-radius: 8px;
    border-left: 4px solid #28a745;
    font-size: 13px;
    margin-bottom: 20px;
}

.success-box p { margin: 5px 0; }

.user-data {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.user-data td {
    padding: 12px 15px;
    border-bottom: 1px solid #eef2f5;
    font-size: 14px;
}

.user-data td:first-child {
    font-weight: 700;
    color: var(--text-muted);
    width: 200px;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
}

/* =========================================
   ССЫЛКИ
   ========================================= */
.link-secondary {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
}

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

/* =========================================
   ПОДВАЛ
   ========================================= */
.footer-info {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
}

.footer-info p { margin: 5px 0; }

/* =========================================
   АДАПТИВ
   ========================================= */
@media (max-width: 600px) {
    .page-wrapper { padding: 25px 20px; }

    .col-label {
        text-align: left;
        width: auto;
        display: block;
        padding: 0 0 5px 0;
    }

    .form-table td { display: block; padding: 4px 0; }

    .user-data td:first-child { width: auto; }
}