/* ============================================
   RSVP SYSTEM - GLOBAL STYLES
   ============================================ */

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

:root {
    --primary-color: #5a7c84;
    --primary-dark: #3f5660;
    --primary-light: #e8ecf0;
    --success-color: #6ba574;
    --error-color: #c97070;
    --warning-color: #d4a574;
    --text-dark: #2d3e47;
    --text-light: #687885;
    --border-color: #e0e5ea;
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-md: 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 4px 12px 0 rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ============================================
   HEADER
   ============================================ */

.header {
    text-align: center;
    color: var(--text-dark);
    animation: slideDown 0.6s ease;
}

.header-content {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    padding: 30px 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.logo-section {
    display: flex;
    justify-content: center;
    margin-bottom: 8px;
}

.logo-img {
    max-width: 80px;
    height: auto;
    max-height: 80px;
    object-fit: contain;
}

.title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 500;
}

/* ============================================
   CARD
   ============================================ */

.card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 32px 24px;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.6s ease;
}

/* ============================================
   FORM STYLES
   ============================================ */

.form-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.label-icon {
    font-size: 18px;
}

/* Input & Select Styles */
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-dark);
    background: var(--bg-white);
    transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: linear-gradient(120deg, rgba(59, 130, 246, 0.02) 0%, rgba(59, 130, 246, 0.04) 100%);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-light);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
    font-family: inherit;
}

/* ============================================
   RADIO GROUP
   ============================================ */

.radio-group {
    display: flex;
    gap: 16px;
    margin-top: 8px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    flex: 1;
}

.radio-label input[type="radio"] {
    appearance: none;
    width: 0;
    height: 0;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    background: var(--bg-white);
    transition: var(--transition);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.radio-label input[type="radio"]:checked + .radio-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: inset 0 0 0 2px var(--bg-white);
}

.radio-text {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 500;
}

/* ============================================
   ERROR MESSAGE
   ============================================ */

.error-message {
    color: var(--error-color);
    font-size: 12px;
    font-weight: 500;
    display: none;
}

.error-message.show {
    display: block;
    animation: shake 0.3s ease;
}

/* ============================================
   BUTTON
   ============================================ */

.btn-submit {
    padding: 14px 28px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
    box-shadow: 0 2px 8px rgba(90, 124, 132, 0.2);
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(90, 124, 132, 0.3);
    background: var(--primary-dark);
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-icon {
    font-size: 18px;
}

/* ============================================
   SUCCESS MESSAGE
   ============================================ */

.success-message {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.6s ease;
}

.success-message.hidden {
    display: none;
}

.success-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.success-icon {
    width: 60px;
    height: 60px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: bold;
    animation: scaleIn 0.5s ease;
}

.success-message h2 {
    color: var(--text-dark);
    font-size: 24px;
    margin-top: 8px;
}

.success-message p {
    color: var(--text-light);
    font-size: 14px;
}

.btn-new-rsvp {
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 8px;
}

.btn-new-rsvp:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    text-align: center;
    color: var(--text-light);
    font-size: 13px;
    animation: slideUp 0.8s ease;
}

.footer-small {
    font-size: 12px;
    opacity: 0.8;
    margin-top: 4px;
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */

.toast {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    padding: 14px 16px;
    background: var(--text-dark);
    color: white;
    border-radius: 10px;
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: var(--transition);
    max-width: 400px;
    margin: 0 auto;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.toast.success {
    background: var(--success-color);
}

.toast.error {
    background: var(--error-color);
}

.toast.warning {
    background: var(--warning-color);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

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

@keyframes scaleIn {
    from {
        transform: scale(0.5);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet & Small Devices */
@media (max-width: 768px) {
    body {
        padding: 16px;
    }

    .card {
        padding: 24px 16px;
    }

    .header-content {
        padding: 20px 16px;
    }

    .logo-img {
        max-width: 70px;
    }

    .title {
        font-size: 24px;
    }

    .subtitle {
        font-size: 13px;
    }

    .form-label {
        font-size: 13px;
    }

    .form-input,
    .form-select,
    .form-textarea {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 12px 12px;
    }

    .radio-group {
        gap: 12px;
    }

    .btn-submit {
        padding: 12px 24px;
        font-size: 15px;
    }

    .success-message {
        padding: 24px 16px;
    }

    .success-message h2 {
        font-size: 22px;
    }
}

/* Mobile Devices */
@media (max-width: 480px) {
    body {
        padding: 12px;
    }

    .container {
        gap: 16px;
    }

    .card {
        padding: 20px 12px;
        border-radius: 12px;
    }

    .header-content {
        padding: 20px 12px;
        border-radius: 12px;
    }

    .title {
        font-size: 22px;
    }

    .subtitle {
        font-size: 12px;
    }

    .form-group {
        gap: 6px;
    }

    .form-label {
        font-size: 12px;
    }

    .label-icon {
        font-size: 16px;
    }

    .form-input,
    .form-select,
    .form-textarea {
        padding: 11px 11px;
        font-size: 16px;
        border-radius: 8px;
    }

    .radio-group {
        gap: 8px;
        flex-wrap: wrap;
    }

    .radio-label {
        flex: 0 1 calc(50% - 4px);
    }

    .btn-submit {
        padding: 11px 20px;
        font-size: 14px;
        gap: 6px;
        margin-top: 6px;
    }

    .btn-icon {
        font-size: 16px;
    }

    .success-message {
        padding: 20px 12px;
    }

    .success-icon {
        width: 52px;
        height: 52px;
        font-size: 28px;
    }

    .success-message h2 {
        font-size: 20px;
    }

    .success-message p {
        font-size: 13px;
    }

    .btn-new-rsvp {
        padding: 10px 20px;
        font-size: 13px;
    }

    .footer {
        font-size: 12px;
    }

    .footer-small {
        font-size: 11px;
    }

    .toast {
        left: 12px;
        right: 12px;
        bottom: 16px;
        padding: 12px 14px;
        font-size: 13px;
    }
}

/* Small Mobile Devices */
@media (max-width: 360px) {
    .title {
        font-size: 20px;
    }

    .form-label {
        font-size: 11px;
    }

    .form-input,
    .form-select,
    .form-textarea {
        font-size: 16px;
        padding: 10px 10px;
    }

    .btn-submit {
        padding: 10px 16px;
        font-size: 13px;
    }
}

/* Force Light Mode Everywhere */
* {
    color-scheme: light;
}

body {
    color-scheme: light;
}