/* ===============================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   =============================================== */
:root {
    /* Primary Color Palette */
    --primary: #dba85f;
    --danger: #B85450;
    --danger-light: #bb736f;
    --success: #5A7C65;
    --success-light: #3F8E71;

    --warning: #CE8354;
    --warning-light: #ddb599;
    --warning-dark: #b65c3c;

    /* Neutral Colors */
    --white: #F4F1E8;
    --beige: #D4B896;
    --beige-light: #E8DCCC;
    --sage: #97bfb0;
    --blue-grey: #6B8CAE;
    --blue-grey-dark: #3a5271;
    --blue-grey-accent: #556b94;
    --brown: #8B7355;
    --brown-dark: #A67B5B;
    --green-muted: #96ac93;
    
    /* Semantic Colors */
    --border-color: #3A2F26;
    --text-color: #3A2F26;
    --background-gradient-top: #4f705c;
    --background-gradient-bottom: #5A7C65;
    
    /* Typography */
    --font-header: "new-spirit", serif;
    --font-body: "komet", sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --font-size-xs: 0.65rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-hard: var(--space-2) var(--space-2) 0px var(--border-color);
    
    /* Transitions */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===============================================
   RESET & BASE STYLES
   =============================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(180deg, var(--background-gradient-top) 500px, var(--background-gradient-bottom) 500px);
    min-height: 100vh;
    padding: var(--space-8) var(--space-4) var(--space-8) var(--space-4);
}

/* ===============================================
   LAYOUT & CONTAINER
   =============================================== */
.container {
    max-width: 640px;
    margin: 0 auto;
    position: relative;
}

.container header {
    padding: var(--space-8) var(--space-8) 0 var(--space-8);
    background-color: var(--white);
    box-shadow: var(--shadow-hard);
}

.container header h2 {
    margin: 0;
    padding-bottom: var(--space-8);
    text-align: center;
    border-bottom: 2px dashed var(--border-color);
}

#create-event-section,
#rsvp-section,
#result-section,
#management-section,
#password-section {
    background-color: var(--white);
    box-shadow: var(--shadow-hard);
    padding: var(--space-8);
}

section {
    padding: var(--space-8);
}

/* ===============================================
   TYPOGRAPHY
   =============================================== */
h1 {
    font-size: var(--font-size-4xl);
    font-family: var(--font-header);
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.025em;
}

h2 {
    font-size: var(--font-size-3xl);
    font-family: var(--font-header);
    font-weight: 700;
    margin-bottom: var(--space-6);
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--space-3);
}

p {
    text-align: center;
    color: var(--text-color);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-lg);
}

p:last-of-type {
    margin-bottom: 0;
}

.app-header h1 {
    mix-blend-mode: soft-light;
    font-size: 10rem;
    color: var(--white);
    height: 10rem;
    margin-top: -7rem;
    opacity: 0.25;
}

h1.site-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-8);
    margin-top:0;
    color: var(--sage);
}

h1.site-title a {
    position: relative;
    color: var(--sage);
    overflow: hidden;
    text-decoration: none;
    background: linear-gradient(135deg, var(--sage) 0%, var(--sage) 50%, var(--white) 80%, var(--sage) 100%);
    background-size: 200% 200%;
    background-position: 0% 0%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: background-position 0.5s ease;
}

h1.site-title a:hover {
    background-position: 150% 100%;
}

small {
    display: block;
    font-size: var(--font-size-xs);
    margin-top: var(--space-2);
    font-style: italic;
}

a {
    color: var(--border-color);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: text-underline-offset 0.2s ease;
}

a:hover {
    text-underline-offset: 6px;
}

.intro {
    color: var(--white);
}

.intro p {
    color: var(--beige);
}

/* ===============================================
   FORMS & INPUTS
   =============================================== */
.form-group {
    padding: var(--space-4);
    border: 2px solid var(--border-color);
    border-bottom: none;
    cursor: pointer;
    display:flex;
    gap: var(--space-4);
}

.form-group:nth-last-child(1 of .form-group) {
    border-bottom: 2px solid var(--border-color);
}

.form-group:focus-within {
    background-color: var(--sage);
    box-shadow: var(--shadow-lg);
}

.form-group.has-validation-error {
    background-color: #fef2f2;
    border-color: var(--danger);
    position: relative;
}

.form-group.has-validation-error input::placeholder, .form-group.has-validation-error textarea::placeholder {
    color: var(--danger);
}

.form-group.has-validation-error::after {
    content: '';
    position: absolute;
    width: calc(100% + 4px);
    background-color: var(--danger);
    height: 2px;
    bottom: -2px;
    left: -2px;
}

.form-group-icon {
    display:flex;
    margin-top: var(--space-1);
}

.form-group-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--brown-dark);
}

.form-group:focus-within svg {
    fill: var(--background-gradient-top);
}

.form-group.has-validation-error svg {
    fill: var(--danger);
}

.form-group-input {
    flex-grow: 1;
}

label {
    display: block;
    font-weight: 600;
    padding: 0;
    color: var(--text-color);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    cursor: pointer;
}

input, select, textarea {
    width: 100%;
    padding: 0;
    border: none;
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: var(--transition);
    color: var(--text-color);
    background: transparent;
    position: relative;
}

textarea {
    resize: none;
}

input:focus, select:focus, textarea:focus {
    outline: none;
}

input::placeholder, textarea::placeholder {
    color: var(--brown);
}

input:focus::placeholder, textarea:focus::placeholder {
    color: var(--success);
}

/* DateTime Input Styling */
input[type="datetime-local"] {
    cursor: pointer;
    position: relative;
}

input[type="datetime-local"]::-webkit-calendar-picker-indicator {
    background: transparent;
    color: var(--primary);
    cursor: pointer;
    opacity: 0.7;
    transition: var(--transition);
    width: 20px;
    height: 20px;
}

input[type="datetime-local"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
    transform: scale(1.1);
}

input[type="datetime-local"]::-moz-focus-inner {
    border: 0;
}

.form-group:has(input[type="datetime-local"]) {
    cursor: pointer;
    transition: var(--transition);
}

.form-group:has(input[type="datetime-local"]):hover:not(.has-validation-error):not(.has-validation-warning) {
    background-color: rgba(151, 191, 176, 0.3);
}

/* Validation Messages */
.date-error {
    color: var(--danger);
    font-size: var(--font-size-xs);
    margin-top: var(--space-2);
    font-weight: 600;
    animation: fadeInError 0.3s ease;
    display: none;
}

.date-warning {
    color: var(--primary);
    font-size: var(--font-size-xs);
    margin-top: var(--space-2);
    font-weight: 600;
    animation: fadeInError 0.3s ease;
    display: none;
}

/* ===============================================
   BUTTONS
   =============================================== */
.btn-primary {
    padding: var(--space-3) var(--space-4);
    background: var(--primary);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--success);
}

button + button {
    margin-left: var(--space-2);
}

/* 3D Push Button Effect */
.pushme {
    position: relative;
    font-weight: 600;
    background-color: var(--border-color);
    display: block;
    border: none;
    width: calc(100% - var(--space-2));
    font-size: var(--font-size-lg);
    transform: translateX(var(--space-2));
    font-family: var(--font-header);
    color: var(--border-color);
    letter-spacing: 0.025em;
    margin-top: var(--space-5);
}

.inner {
    display: block;
    background-color: var(--primary);
    border: 2px solid var(--border-color);
    padding: var(--space-4) var(--space-6);
    cursor: pointer;
    user-select: none;
    transform: translate3d(calc(var(--space-2)*-1), calc(var(--space-2)*-1), 0);
    transition-property: transform, background-color;
    transition-duration: 240ms;
    transition-timing-function: cubic-bezier(0.175, 0.885, 0.320, 1.275);
}

.pushme:hover .inner {
    transform: translate3d(calc(var(--space-2)*-0.5), calc(var(--space-2)*-0.5), 0);
    transition-property: transform, background-color;
    transition-duration: 120ms;
    transition-timing-function: cubic-bezier(0.230, 1.000, 0.320, 1.000);
}

.pushme:active .inner,
.pushme.click .inner {
    transform: translate3d(0, 0, 0);
    background-color: var(--primary);
    transition-property: transform, background-color;
    transition-duration: 120ms;
    transition-timing-function: cubic-bezier(0.230, 1.000, 0.320, 1.000);
}

.btn-save {
    width: 100%;
    padding: var(--space-2) var(--space-4);
    background: var(--success);
    color: var(--white);
    border: 2px solid var(--border-color);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 75ms ease;
    position: relative;
    overflow: hidden;
    text-transform: none;
    letter-spacing: 0.025em;
}

.btn-save:hover {
    background-color: var(--success-light);
}

.btn-save:active {
    background-color: var(--success);
    transform: translateY(0px);
}

.btn-secondary {
    padding: var(--space-3) var(--space-4);
    background: var(--white);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--beige);
}

.btn-delete {
    font-weight: bold;
    background-color: var(--danger);
    border: 2px solid var(--border-color);
}

.btn-delete:hover {
    background-color: var(--danger-light);
}

.btn-new-event {
    margin-top: var(--space-4);
}

.button-group {
    margin-top: var(--space-3);
}

/* Link Box Component */
.link-box {
    display: flex;
    gap: var(--space-3);
    margin: 0;
    background: var(--white);
}

.link-box input {
    flex: 1;
    font-family: var(--font-mono);
    background: var(--white);
    border: 2px solid var(--border-color);
    font-size: var(--font-size-sm);
    padding-left: 10px;
}

.link-box button {
    padding: var(--space-3) var(--space-5);
    background: var(--green-muted);
    color: var(--white);
    border: 2px solid var(--border-color);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
}

.link-box button:hover {
    background: var(--success-light);
}

/* ===============================================
   LOADING & STATUS MESSAGES
   =============================================== */
#loading {
    background: var(--beige);
    font-family: var(--font-header);
    padding: var(--space-8);
    box-shadow: var(--shadow-hard);
    font-weight: bold;
    text-align: center;
    color: var(--text-color);
    font-size: var(--font-size-lg);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 5px solid var(--brown);
    border-bottom-color: var(--border-color);
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-4);
}

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

.success-container {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.error, .success {
    padding: var(--space-4);
    margin: var(--space-4) 0;
    font-weight: 500;
    animation: slideIn 0.3s ease;
    position: fixed;
    top: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    box-shadow: var(--space-1) var(--space-1) 0px var(--danger);
}

.error {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    color: var(--danger);
    border: 2px solid var(--danger);
}

.success {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    color: var(--success);
    border: 2px solid var(--success);
    box-shadow: var(--space-1) var(--space-1) 0px var(--success);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px) translateX(-50%);
    }
    to {
        opacity: 1;
        transform: translateY(0) translateX(-50%);
    }
}

@keyframes fadeInError {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===============================================
   MODAL
   =============================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.modal-content {
    background: var(--white);
    padding: var(--space-8);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-hard);
    max-height: 90vh;
    overflow-y: auto;
}

/* Privacy Check Modal Styles */
.privacy-modal {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.privacy-modal-title {
    font-family: var(--font-header);
}

.privacy-modal-body {
    margin-bottom: 25px;
}

p.privacy-modal-intro {
    text-align:left;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
}

.privacy-warning-box {
    background: color-mix(in srgb, var(--warning-light) 20%, var(--white) 0%);
    border: 1px solid var(--warning-dark);
    padding: 16px;
    margin-bottom: 20px;
}

.privacy-warning-title {
    color: var(--warning-dark);
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

p.privacy-warning-text {
    margin: 0;
    color: var(--warning-dark);
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
}

.privacy-warning-list {
    margin: 8px 0 0 0;
    color: var(--warning-dark);
    font-size: 14px;
    padding-left: 20px;
}

.privacy-examples {
    margin: 0;
    color: #555;
    font-size: 14px;
    line-height: 1.5;
    text-align:left;
}

.good-example {
    color: var(--success);
}

.bad-example {
    color: var(--warning-dark);
}

.privacy-modal-buttons {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-4);
}

/* ===============================================
   MANAGEMENT SECTIONS
   =============================================== */
.manage-container h1 {
    margin-bottom: var(--space-6);
    color: var(--white);
}

.manage-container p {
    margin-bottom: var(--space-4);
}

.event-info,
.attendees-section,
.actions-section {
    border-bottom: 2px dashed var(--border-color);
    padding: var(--space-8) 0;
}

.event-info {
    padding-top: 0;
}

.event-info h2 {
    text-align: center;
}

.back-link {
    text-align: center;
    padding: var(--space-4) 0 0 0;
}

.back-link small {
    font-size: var(--font-size-sm);
}

.back-link a {
    color: var(--blue-grey);
}

#edit-form .last-visible {
    border-bottom: 2px solid var(--border-color);
}

.edit-note {
    font-size: 0.9em;
    color: var(--warning-dark);
    font-style: italic;
    margin-top: var(--space-2);
    padding: var(--space-2);
    background: color-mix(in srgb, var(--warning-light) 20%, var(--white) 0%);
    border-left: 2px solid var(--warning);
    text-align: left;
}

/* ===============================================
   FOOTER
   =============================================== */
footer {
    margin-top: var(--space-8);
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */
@media (max-width: 640px) {
    body {
        padding-inline: 0;
    }
    
    h1 {
        font-size: var(--font-size-2xl);
    }
    
    .link-box {
        flex-direction: column;
    }
    
    input[type="datetime-local"]::-webkit-calendar-picker-indicator {
        width: 24px;
        height: 24px;
    }
    
    .form-group:has(input[type="datetime-local"]) {
        padding: var(--space-6) var(--space-4);
    }
}

/* ===============================================
   UTILITY CLASSES
   =============================================== */
.form-group textarea:focus + .field-error.suggestion {
    opacity: 1;
}

/* Honeypot Fields */
.website-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
}

.website-field input {
    width: 1px;
    height: 1px;
    border: none;
    padding: 0;
    margin: 0;
    position: absolute;
    left: -9999px;
    tabindex: -1;
}