:root {
    --primary-color: #1877f2;
    --primary-dark: #166fe5;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-gradient-start: #f0f9ff;
    --bg-gradient-end: #e0f2fe;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --card-hover-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.main-wrapper {
    width: 100%;
    max-width: 900px;
    animation: fadeIn 0.5s ease-out;
}

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

/* Logo Container */
.logo-container {
    text-align: center;
    margin-bottom: 2.5rem;
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-img {
    max-width: 200px;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05);
}

/* Main Container */
.container {
    background: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    animation: scaleIn 0.5s ease-out 0.2s backwards;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.container:hover {
    box-shadow: var(--card-hover-shadow);
}

/* Header Section */
.header-section {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid #f3f4f6;
}

h1 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

h1 i {
    color: var(--primary-color);
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Form Section */
.form-section {
    margin-top: 2rem;
}

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

label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

label i {
    color: var(--primary-color);
}

.input-wrapper {
    position: relative;
}

input[type="text"] {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    background: #fafafa;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 4px rgba(24, 119, 242, 0.1);
    outline: none;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
    transition: var(--transition);
}

input[type="text"]:focus + .input-icon {
    color: var(--primary-color);
}

.input-hint {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Button */
.btn-primary {
    width: 100%;
    padding: 1.1rem 2rem;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(24, 119, 242, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(24, 119, 242, 0.4);
}

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

.btn-primary:disabled {
    background: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-text, .btn-loader {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Notifications Wrapper */
.notifications-wrapper {
    margin-top: 2.5rem;
    animation: slideUp 0.6s ease-out 0.4s backwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.notifications-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.notifications-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
}

.notifications-header i {
    color: var(--primary-color);
}

/* Notifications Grid */
.notifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.notification-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border-left: 5px solid transparent;
    animation: popIn 0.4s ease-out;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.notification-card:hover {
    box-shadow: var(--card-hover-shadow);
    transform: translateY(-3px);
}

.notification-card.success {
    border-left-color: var(--success-color);
    background: linear-gradient(135deg, #f0fdf4 0%, white 100%);
}

.notification-card.error {
    border-left-color: var(--error-color);
    background: linear-gradient(135deg, #fef2f2 0%, white 100%);
}

.notification-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.notification-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.incad-icon {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.q10-icon {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.notification-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 700;
}

.notification-body {
    padding-left: 1rem;
}

.notification-body p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.notification-card.success .notification-body p {
    color: #047857;
}

.notification-card.error .notification-body p {
    color: #dc2626;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    .container {
        padding: 2rem 1.5rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .notifications-grid {
        grid-template-columns: 1fr;
    }
}

/* Loading Animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.fa-spinner {
    animation: spin 1s linear infinite;
}

/* 🛡️ Estados de protección contra doble clic */
.btn-primary.processing {
    pointer-events: none;
    opacity: 0.7;
    cursor: not-allowed !important;
}

.btn-primary:disabled {
    background: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
    cursor: not-allowed !important;
    box-shadow: none;
    transform: none;
    pointer-events: none;
}

/* Indicador visual de cooldown */
.btn-primary.cooldown {
    position: relative;
    overflow: hidden;
}

.btn-primary.cooldown::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: #f59e0b;
    animation: cooldownBar 3s linear;
}

@keyframes cooldownBar {
    from {
        width: 100%;
    }
    to {
        width: 0%;
    }
}