/* Reset et variables */
:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --accent-green: #22c55e;
    --dark-blue: #0f172a;
    --light-blue: #dbeafe;
    --white: #ffffff;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --error: #ef4444;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    min-height: 100vh;
    color: var(--gray-800);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--white);
    padding: 20px 0;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 40px;
    border-radius: 0 0 20px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-icon .ib {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-blue);
    line-height: 1;
}

.logo-icon .group {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: 1px;
}

.logo-icon .tech {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-green);
    letter-spacing: 1px;
}

.logo-text h1 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 2px;
}

.logo-text p {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.badge {
    background: var(--primary-blue);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Main Content */
.main-content {
    padding: 20px 0 60px;
}

.welcome-section {
    text-align: center;
    margin-bottom: 40px;
}

.location-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-green);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    animation: fadeInDown 0.6s ease;
}

.welcome-section h2 {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 10px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.welcome-section p {
    color: var(--gray-600);
    font-size: 1.1rem;
    animation: fadeInUp 0.6s ease 0.4s both;
}

/* PIN Form */
.pin-form-container {
    max-width: 500px;
    margin: 0 auto 40px;
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.6s ease 0.6s both;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--gray-800);
    font-size: 1rem;
}

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

.pin-input-wrapper input {
    width: 100%;
    padding: 15px 60px 15px 20px;
    font-size: 2rem;
    border: 3px solid var(--gray-200);
    border-radius: 12px;
    text-align: center;
    letter-spacing: 10px;
    font-weight: 700;
    color: var(--primary-blue);
    transition: all 0.3s ease;
}

.pin-input-wrapper input:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.toggle-pin {
    position: absolute;
    right: 15px;
    background: none;
    border: none;
    color: var(--gray-600);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 5px;
    transition: color 0.3s;
}

.toggle-pin:hover {
    color: var(--primary-blue);
}

.pin-dots {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
}

.pin-dots span {
    width: 15px;
    height: 15px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    transition: all 0.3s;
}

.pin-dots span.filled {
    background: var(--accent-green);
    border-color: var(--accent-green);
    transform: scale(1.2);
}

.btn-submit {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.4);
}

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

.error-message {
    background: #fef2f2;
    border: 2px solid var(--error);
    color: var(--error);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: shake 0.5s;
}

.help-section {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--gray-200);
}

.help-section p {
    color: var(--gray-600);
    margin-bottom: 10px;
}

.contact-link {
    color: var(--secondary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.contact-link:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.feature-item {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.8rem;
    color: var(--primary-blue);
}

.feature-item h3 {
    color: var(--primary-blue);
    margin-bottom: 8px;
    font-size: 1.2rem;
}

.feature-item p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background: var(--dark-blue);
    color: var(--white);
    padding: 40px 0 20px;
    margin-top: 60px;
    border-radius: 20px 20px 0 0;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.contact-item i {
    color: var(--accent-green);
}

.footer-bottom p {
    margin-bottom: 5px;
    opacity: 0.9;
}

.slogan {
    color: var(--accent-green) !important;
    font-weight: 600;
    font-style: italic;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
    
    .logo {
        flex-direction: column;
        gap: 10px;
    }
    
    .logo-icon .ib {
        font-size: 2rem;
    }
    
    .logo-text h1 {
        font-size: 1.2rem;
    }
    
    .badge {
        font-size: 0.8rem;
        padding: 8px 15px;
    }
    
    .welcome-section h2 {
        font-size: 1.5rem;
    }
    
    .pin-form-container {
        padding: 30px 20px;
    }
    
    .pin-input-wrapper input {
        font-size: 1.5rem;
        padding: 12px 50px 12px 15px;
        letter-spacing: 8px;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 15px;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .logo-icon .ib {
        font-size: 1.8rem;
    }
    
    .welcome-section h2 {
        font-size: 1.3rem;
    }
    
    .pin-input-wrapper input {
        font-size: 1.3rem;
        letter-spacing: 6px;
    }
    
    .btn-submit {
        padding: 15px;
        font-size: 1rem;
    }
}

/* Loading state */
.loading {
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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