/* ===== CSS VARIABLES ===== */
:root {
    --primary-green: #2e7b52;        
    --secondary-green: #4f9d69;    
    --highlight-yellow: #fff876;     
    --highlight-yellow-dark: #f9c74f;
    
    --bg-light: #e4e6e3;             
    --text-dark: #191919;
    --text-light: #404040;
    --text-price: #f11764;             
    --text-highlight: var(--primary-green);
    
    --card-bg: #98c58c;              
    --footer-bg: #469e6f;
    --border-color: #d2d6d2;
    
    --input-bg: #ffffff;
    --input-border: #c5cac5;
    --input-focus: var(--primary-green);
    
    --btn-primary-bg: var(--primary-green);
    --btn-primary-text: #fff;
    --btn-primary-hover: #5aa461;
    
    --btn-secondary-bg: var(--highlight-yellow);
    --btn-secondary-text: #2e2e2e;
    --btn-secondary-hover: var(--highlight-yellow-dark);
    
    --success: #90be6d;  
    --warning: #f9c74f;  
    --error: #f28482;
}

/* ===== DARK THEME ===== */
[data-theme="dark"] {
    --primary-green: #2e7b52;       
    --secondary-green: #4f9d69;     
    --highlight-yellow: #ffd670;     
    --highlight-yellow-dark: #f9c74f;
    
    --bg-light: #1c1c1c;          
    --text-dark: #ededed;
    --text-light: #c0c0c0;
    --text-highlight: var(--highlight-yellow);
    --card-bg: #262626;
    --footer-bg: rgb(59, 134, 82);
    --border-color: #3a3a3a;
    
    --input-bg: #2a2a2a;
    --input-border: #3a3a3a;
    --input-focus: var(--highlight-yellow);
    
    --btn-primary-bg: var(--primary-green);
    --btn-primary-text: #fff;
    --btn-primary-hover: #336a42;
    
    --btn-secondary-bg: var(--highlight-yellow);
    --btn-secondary-text: #1c1c1c;
    --btn-secondary-hover: var(--highlight-yellow-dark);
    
    --success: #4f9d69;   
    --warning: #ffd670;
    --error: #f28b82;
}

/* ===== GLOBAL STYLES ===== */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@300;400;600;700&display=swap');

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Nunito', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    transition: background-color 0.3s ease, color 0.3s ease;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 1rem;
}

/* ===== THEME TOGGLE ===== */
.themeToggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--card-bg);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 1000;
}

.themeToggle i {
    font-size: 1.2rem;
    color: var(--primary-green);
}

.themeToggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

/* ===== PAGE HEADER ===== */
.pageHeader {
    text-align: center;
    padding: 1.5rem 1rem;
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(152, 197, 140, 0.85) 100%);
    border-radius: 12px;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.pageHeader::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 248, 118, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.pageHeader h1 {
    font-size: 1.8rem;
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
}

.pageHeader h1 i {
    color: var(--primary-green);
    font-size: 1.6rem;
}

.pageHeader p {
    font-size: 1rem;
    color: var(--text-light);
    position: relative;
    z-index: 1;
}

/* ===== FORM CONTAINER ===== */
.formContainer {
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
    flex: 1;
}

form {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: slideIn 0.4s ease;
}

/* ===== FORM GROUPS ===== */
.formGroup {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

label i {
    color: var(--primary-green);
    font-size: 1rem;
}

.required {
    color: var(--error);
    font-size: 0.9rem;
}

/* ===== INPUTS ===== */
input[type="text"],
input[type="number"],
textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    font-size: 0.95rem;
    font-family: 'Nunito', sans-serif;
    background-color: var(--input-bg);
    color: var(--text-dark);
    border: 2px solid var(--input-border);
    border-radius: 10px;
    transition: all 0.3s ease;
    outline: none;
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 4px rgba(46, 123, 82, 0.1);
    transform: translateY(-2px);
}

[data-theme="dark"] input[type="text"]:focus,
[data-theme="dark"] input[type="number"]:focus,
[data-theme="dark"] textarea:focus {
    box-shadow: 0 0 0 4px rgba(255, 214, 112, 0.1);
}

textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

/* ===== FILE INPUT ===== */
.fileInputWrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

input[type="file"] {
    display: none;
}

.fileLabel {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1.2rem;
    background: linear-gradient(135deg, var(--input-bg) 0%, rgba(255, 255, 255, 0.8) 100%);
    border: 2px dashed var(--input-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-light);
    font-weight: 600;
    min-height: 120px;
    flex-direction: column;
}

.fileLabel:hover {
    border-color: var(--primary-green);
    background: linear-gradient(135deg, var(--input-bg) 0%, rgba(152, 197, 140, 0.1) 100%);
    transform: translateY(-2px);
}

.fileLabel i {
    font-size: 2.5rem;
    color: var(--primary-green);
}

.fileLabel span {
    font-size: 0.95rem;
}

.fileName {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background-color: rgba(144, 190, 109, 0.15);
    border-radius: 8px;
}

.fileName i {
    color: var(--success);
}

/* ===== IMAGE PREVIEW ===== */
.imagePreview {
    display: none;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.imagePreview.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.imagePreview img {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== BUTTONS ===== */
.formActions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

button[type="submit"],
.btnSecondary {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    min-height: 52px;
}

button[type="submit"] {
    background: linear-gradient(135deg, var(--btn-primary-bg) 0%, var(--btn-primary-hover) 100%);
    color: var(--btn-primary-text);
}

button[type="submit"]:hover {
    background: linear-gradient(135deg, var(--btn-primary-hover) 0%, var(--primary-green) 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(46, 123, 82, 0.3);
}

button[type="submit"]:active {
    transform: translateY(-1px);
}

.btnSecondary {
    background: linear-gradient(135deg, var(--btn-secondary-bg) 0%, var(--highlight-yellow-dark) 100%);
    color: var(--btn-secondary-text);
}

.btnSecondary:hover {
    background: linear-gradient(135deg, var(--highlight-yellow-dark) 0%, var(--btn-secondary-bg) 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(249, 199, 79, 0.3);
}

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

/* ===== HELPER TEXT ===== */
.helperText {
    font-size: 0.8rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.helperText i {
    font-size: 0.75rem;
    color: var(--primary-green);
}

/* ===== ANIMATIONS ===== */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ===== RESPONSIVE - TABLET (768px+) ===== */
@media (min-width: 768px) {
    body {
        padding: 2rem;
    }

    .pageHeader {
        padding: 2rem 1.5rem;
        margin-bottom: 2.5rem;
    }

    .pageHeader h1 {
        font-size: 2.2rem;
    }

    .pageHeader h1 i {
        font-size: 2rem;
    }

    .pageHeader p {
        font-size: 1.1rem;
    }

    form {
        padding: 2.5rem 2rem;
        gap: 1.8rem;
    }

    label {
        font-size: 1rem;
    }

    input[type="text"],
    input[type="number"],
    textarea {
        padding: 1rem 1.2rem;
        font-size: 1rem;
    }

    .fileLabel {
        padding: 1.5rem;
        min-height: 140px;
    }

    .formActions {
        gap: 1.2rem;
    }

    button[type="submit"],
    .btnSecondary {
        min-height: 56px;
    }
}

/* ===== RESPONSIVE - DESKTOP (1024px+) ===== */
@media (min-width: 1024px) {
    .formContainer {
        max-width: 800px;
    }

    form {
        padding: 3rem 2.5rem;
        gap: 2rem;
    }

    .pageHeader h1 {
        font-size: 2.5rem;
    }

    .pageHeader h1 i {
        font-size: 2.2rem;
    }

    .pageHeader p {
        font-size: 1.2rem;
    }

    input[type="text"],
    input[type="number"],
    textarea {
        font-size: 1.05rem;
    }

    .fileLabel {
        min-height: 160px;
    }

    button[type="submit"],
    .btnSecondary {
        font-size: 1.05rem;
        min-height: 58px;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 3px solid var(--primary-green);
    outline-offset: 2px;
}

[data-theme="dark"] *:focus-visible {
    outline-color: var(--highlight-yellow);
}