/* Project Signature: SovereignHugo303 */

* {
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --text-dark: #1f2937;
    --text-light: #e0e0e0;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    transition: background 0.4s ease;
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
}

/* Dark Mode */
body.dark-mode {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    color: var(--text-light);
}

body.dark-mode .page-content {
    color: var(--text-light);
}

body.dark-mode .data-display {
    background: #1e293b;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    border: 1px solid #334155;
}

body.dark-mode .data-display h3 {
    color: #93c5fd;
}

body.dark-mode .data-display p {
    color: #cbd5e1;
}

body.dark-mode .modal-content p {
    color: #cbd5e1;
}

body.dark-mode .form-group label {
    color: #e2e8f0;
}

body.dark-mode .form-group input,
body.dark-mode textarea {
    background: #1e293b;
    color: #e2e8f0;
    border-color: #334155;
}

body.dark-mode .form-group input::placeholder,
body.dark-mode textarea::placeholder {
    color: #64748b;
}

body.dark-mode .reset-btn {
    background: #334155;
    color: #e2e8f0;
    border-color: #475569;
}

body.dark-mode .reset-btn:hover {
    background: #475569;
    border-color: #64748b;
}

body.dark-mode .form-group input,
body.dark-mode textarea {
    background: #2d2d44;
    color: #e0e0e0;
    border-color: #444;
}

body.dark-mode .form-group input:focus,
body.dark-mode textarea:focus {
    border-color: #667eea;
}

body.dark-mode .reset-btn {
    background: #3d3d54;
    color: #e0e0e0;
    border-color: #555;
}

body.dark-mode .reset-btn:hover {
    background: #4d4d64;
    border-color: #777;
}

.page-header {
    text-align: center;
    color: white;
    padding: 60px 20px;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
}

.header-top {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.page-header h1 {
    margin: 0;
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -1px;
    background: linear-gradient(180deg, #ffffff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dark-mode-btn {
    font-size: 28px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    width: 50px;
    height: 50px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    backdrop-filter: blur(10px);
}

.dark-mode-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.05);
}

.dark-mode-btn:active {
    transform: scale(0.95);
}

.page-content {
    text-align: center;
    color: white;
    padding: 40px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.page-content p {
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.3px;
    opacity: 0.95;
}

.primary-btn {
    padding: 14px 40px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    background: linear-gradient(135deg, #ffffff 0%, #f5f5f5 100%);
    color: var(--primary-color);
    border: none;
    border-radius: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

.primary-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
    transition: left 0.3s ease;
    z-index: -1;
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px -5px rgba(102, 126, 234, 0.4);
}

.primary-btn:active {
    transform: translateY(-1px);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    backdrop-filter: blur(4px);
}

.modal-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: white;
    padding: 40px;
    z-index: 1000;
    width: 90%;
    max-width: 550px;
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    border: 1px solid rgba(255, 255, 255, 0.7);
}

.modal.visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;
}

.modal-content {
    position: relative;
}

.modal-content h2 {
    margin-top: 0;
    color: var(--text-dark);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.modal-content p {
    color: #6b7280;
    margin-bottom: 24px;
    font-size: 15px;
    line-height: 1.6;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: #f3f4f6;
    border: none;
    font-size: 28px;
    color: #6b7280;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    border-radius: 8px;
}

.modal-close:hover {
    color: var(--text-dark);
    background: #e5e7eb;
    transform: scale(1.1);
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.3px;
}

.form-group input,
textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-group input::placeholder,
textarea::placeholder {
    color: #9ca3af;
}

.form-group input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: #f9fafb;
}

.form-group input:valid {
    border-color: var(--success-color);
}

.form-group input:invalid:not(:placeholder-shown) {
    border-color: var(--error-color);
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px -3px rgba(102, 126, 234, 0.4);
    letter-spacing: 0.3px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -2px rgba(102, 126, 234, 0.5);
}

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

.success-message {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    color: white;
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    letter-spacing: 0.3px;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hidden {
    display: none !important;
}

/* Animation for modal entrance */
@keyframes modalOpen {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.modal.visible {
    animation: modalOpen 0.3s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-header {
        padding: 40px 20px;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .header-top {
        flex-direction: column;
        gap: 15px;
    }
    
    .modal {
        width: 95%;
        padding: 28px;
        max-width: 480px;
    }
    
    .modal-content h2 {
        font-size: 22px;
    }
    
    .page-content p {
        font-size: 15px;
    }
    
    .primary-btn {
        width: 90%;
        max-width: 300px;
    }

    .form-actions {
        gap: 10px;
    }

    .data-display {
        padding: 24px;
        margin-top: 40px;
    }
}

/* Error Messages */
.error-message {
    display: block;
    color: #f44336;
    font-size: 12px;
    margin-top: 5px;
    min-height: 18px;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* Textarea Styling */
textarea {
    width: 100%;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: all 0.3s ease;
    resize: vertical;
}

textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 8px rgba(102, 126, 234, 0.4);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.submit-btn,
.reset-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.reset-btn {
    background: #f5f5f5;
    color: #333;
    border: 2px solid #ddd;
}

.reset-btn:hover {
    background: #e0e0e0;
    border-color: #999;
}

/* Data Display */
.data-display {
    margin-top: 50px;
    padding: 32px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.data-display h3 {
    color: var(--primary-color);
    margin-top: 0;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.data-display p {
    margin: 12px 0;
    color: var(--text-dark);
    word-break: break-word;
    font-size: 15px;
    line-height: 1.6;
}

.data-display strong {
    color: var(--secondary-color);
    font-weight: 600;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer */
.page-footer {
    text-align: center;
    padding: 40px 20px;
    background: rgba(0, 0, 0, 0.15);
    color: white;
    margin-top: 80px;
    font-size: 13px;
    letter-spacing: 0.5px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-footer p {
    margin: 0;
    opacity: 0.85;
}