/* Общие стили для всего приложения */
:root {
    --chat-wallpaper-image: none;
    --chat-wallpaper-opacity: 0;
}

/* Сброс стандартных отступов браузера */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Основные переменные цветов */
:root {
    --primary-color: #7C3AED;
    --primary-glow: rgba(124, 58, 237, 0.42);
    --secondary-color: #A78BFA;
    --background-color: #F4F6FB;
    --surface-color: #FFFFFF;
    --surface-elevated: rgba(255, 255, 255, 0.82);
    --surface-soft: rgba(255, 255, 255, 0.56);
    --text-color: #111827;
    --text-secondary: #6B7280;
    --border-color: #D6DAE5;
    --white: #FFFFFF;
    --error-color: #EF4444;
    --error-glow: rgba(239, 68, 68, 0.24);
    --success-color: #10B981;
    --success-glow: rgba(16, 185, 129, 0.24);
    --input-bg: #EEF2FF;
    --shadow-color: rgba(15, 23, 42, 0.08);
    --shadow-strong: rgba(15, 23, 42, 0.14);
    --app-gradient-start: #F7F7FF;
    --app-gradient-end: #EEF2FF;
}

/* Ночной режим */
body.night-mode {
    --primary-color: #A78BFA;
    --primary-glow: rgba(124, 58, 237, 0.62);
    --secondary-color: #8B5CF6;
    --background-color: #0B1020;
    --surface-color: #16182B;
    --surface-elevated: rgba(22, 24, 43, 0.92);
    --surface-soft: rgba(22, 24, 43, 0.68);
    --text-color: #E5E7EB;
    --text-secondary: #A3AEC4;
    --border-color: #2B3252;
    --input-bg: #121528;
    --error-glow: rgba(239, 68, 68, 0.34);
    --success-glow: rgba(16, 185, 129, 0.32);
    --shadow-color: rgba(0, 0, 0, 0.35);
    --shadow-strong: rgba(0, 0, 0, 0.5);
    --app-gradient-start: #0C1121;
    --app-gradient-end: #141A33;
}

/* Дневной режим */
body:not(.night-mode) {
    --primary-color: #7C3AED;
    --primary-glow: rgba(124, 58, 237, 0.2);
    --secondary-color: #8B5CF6;
    --background-color: #F4F6FB;
    --surface-color: #FFFFFF;
    --surface-elevated: rgba(255, 255, 255, 0.88);
    --surface-soft: rgba(255, 255, 255, 0.62);
    --text-color: #111827;
    --text-secondary: #6B7280;
    --border-color: #D6DAE5;
    --input-bg: #EEF2FF;
    --error-glow: rgba(239, 68, 68, 0.18);
    --success-glow: rgba(16, 185, 129, 0.18);
    --shadow-color: rgba(15, 23, 42, 0.08);
    --shadow-strong: rgba(15, 23, 42, 0.12);
    --app-gradient-start: #F8F9FF;
    --app-gradient-end: #ECF1FF;
}

/* Стили для всей страницы */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background:
        radial-gradient(circle at top left, var(--app-gradient-start) 0%, transparent 42%),
        radial-gradient(circle at bottom right, var(--app-gradient-end) 0%, transparent 48%),
        linear-gradient(135deg, var(--background-color) 0%, var(--surface-color) 100%);
    color: var(--text-color);
    line-height: 1.6;
    height: 100vh;
    width: 100vw;
    position: fixed;
    overflow: hidden;
    top: 0;
    left: 0;
    transition: background 0.35s ease, color 0.25s ease;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image: linear-gradient(rgba(124, 58, 237, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(124, 58, 237, 0.03) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(circle at center, black 55%, transparent 100%);
    opacity: 0.32;
}

/* Анимированный фон с частицами */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    transition: opacity 0.35s ease, background 0.35s ease;
}

body.night-mode::before {
    background:
        radial-gradient(circle at 16% 20%, rgba(124, 58, 237, 0.22) 0%, transparent 32%),
        radial-gradient(circle at 78% 82%, rgba(167, 139, 250, 0.16) 0%, transparent 34%),
        radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 55%);
    animation: backgroundPulse 10s ease-in-out infinite;
}

body:not(.night-mode)::before {
    background:
        radial-gradient(circle at 18% 18%, rgba(124, 58, 237, 0.08) 0%, transparent 30%),
        radial-gradient(circle at 82% 82%, rgba(167, 139, 250, 0.1) 0%, transparent 34%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.55) 0%, transparent 58%);
    animation: backgroundPulse 12s ease-in-out infinite;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* Кнопки */
.btn-primary {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--primary-glow);
}

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

/* Поля ввода */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"] {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 8px;
    background-color: var(--input-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    color: var(--text-color);
    transition: all 0.3s ease;
    position: relative;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 20px var(--primary-glow);
    background-color: var(--surface-color);
}

/* Состояние ошибки для полей */
input.error {
    border-color: var(--error-color);
    box-shadow: 0 0 20px var(--error-glow);
    animation: shake 0.4s ease;
}

/* Состояние успеха для полей */
input.success {
    border-color: var(--success-color);
    box-shadow: 0 0 20px var(--success-glow);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Сообщения об ошибках под полями */
.field-error {
    color: var(--error-color);
    font-size: 13px;
    margin-top: -4px;
    margin-bottom: 12px;
    margin-left: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
    animation: slideDown 0.3s ease;
}

.field-error::before {
    content: '⚠';
    font-size: 14px;
}

.field-success {
    color: var(--success-color);
    font-size: 13px;
    margin-top: -4px;
    margin-bottom: 12px;
    margin-left: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
    animation: slideDown 0.3s ease;
}

.field-success::before {
    content: '✓';
    font-size: 14px;
}

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

/* Ссылки */
a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

a:hover::after {
    width: 100%;
}

::selection {
    background: rgba(124, 58, 237, 0.18);
    color: var(--text-color);
}

body.night-mode ::selection {
    background: rgba(124, 58, 237, 0.35);
    color: #FFFFFF;
}

::selection {
    background: rgba(124, 58, 237, 0.18);
    color: var(--text-color);
}

body.night-mode ::selection {
    background: rgba(124, 58, 237, 0.35);
    color: #FFFFFF;
}

/* Скрыть элемент */
.hidden {
    display: none !important;
}

/* Индикатор загрузки */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 15, 30, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(10px);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 0 0 30px var(--primary-glow);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Плавное появление элементов */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

/* Модальное окно профиля */
.profile-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.profile-modal-overlay.active {
    opacity: 1;
}

.profile-modal-content {
    width: 90%;
    max-width: 800px;
    height: 90vh;
    background: var(--background-color);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 80px var(--primary-glow);
    border: 1px solid var(--border-color);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

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

.profile-modal-content iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Модальное окно настроек */
.settings-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.settings-modal-overlay.active {
    opacity: 1;
}

.settings-modal-content {
    width: 90%;
    max-width: 800px;
    height: 90vh;
    background: var(--background-color);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 80px var(--primary-glow);
    border: 1px solid var(--border-color);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

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

.settings-modal-content iframe {
    width: 100%;
    height: 100%;
    border: none;
}